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Materials analysis in three paintings of Thomas Gainsborough (1727–1788) by portable X-ray fluorescence Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-04-16 Letícia Martins Birelo, Carlos Roberto Appoloni
Three paintings of Thomas Gainsborough (1727–1788), one of the most influential English portrait painters of the late 18th century, from the collection of the Museu de Arte de São Paulo (MASP) - “Francis Rawdon” (1783–1784), “Portrait of Mrs. John Bolton” (1770), and “Drinkstone Park” (1747) - were investigated using portable X-ray fluorescence (pXRF), employing a W tube anode and an XR-100CR detector
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Establishment of beam qualities for medical applications (mammography and CT) in the gamma and X calibration laboratory of CNESTEN according to EN 61267 standards Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-04-15 A. Talbi PhD, T. Zidouz, A. Abarane, A. Mekkioui, A. Allach, M. Zaryah, M. El. Harchaoui
The present study aimed to validate the different radiodiagnostic beam qualities (RQT, WAH and WAV) by the measurements of the X-ray beams HVL of a HOPEWELL generator, X80-225 kV from a high voltage range of 10 at 200 kV, at CNESTEN Gamma and X Calibration Laboratory. The experiments were carried out using the PTW TN 32005 ionization chamber, established at 100 cm from the center of the X-ray tube
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Local environment in yeast-based impedance biodosimeters strongly influences the measurable dose Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-04-12 A. Hassan, K.D. Atkinson
This work investigates the feasibility of yeast-based impedance measurements for retrospective dosimetry applications. The local environment around yeast cells in a previously developed film-badge was modeled using Geant4. A greater dose response was observed when yeast cells were surrounded by an aluminum-polymer structure, which acted as a conversion layer. Bench-top experiments were conducted using
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Direct radiolabeling of methotrexate and methotrexate micelles with Tc-99m using QbD approach Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-04-07 Prashant G. Upadhaya, Swapna J. Nabar
The aim of the work presented in this manuscript was to radiolabel methotrexate and prepare radiolabeled methotrexate micelles, an antifolate drug with Tc-99m using QbD approach. The radiolabeling was executed using the experimental design and the radiolabeled drug was further encapsulated in micelles. The authors are of the view that the radiolabeled MTX could be used to target the folate receptor
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Charge distribution studies in the epi-cadmium neutron induced fission of 238Pu Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-04-07 H. Naik, R.J. Singh, S.P. Dange, W. Jang
Studies on charge distribution have been carried out in the epi-cadmium neutron induced fission of Pu Experimentally fractional cumulative yields (FCY) and independent yields (IY) of various fission products have been measured by using an off-line γ-ray spectrometric technique. From the FCY values, the charge distribution parameters such as the isobaric width parameter (), most probable charge Z and
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Effect of rare-earth oxide (Eu2O3) on the physical, mechanical, acoustic and radiation shielding properties of the CaO-Gd2O3–SiO2–B2O3 glasses Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-04-03 D. Naderi, M. Ahmadi, V. Zanganeh
In this study, we examined the effectiveness of europium-doped calcium gadolinium silicoborate glasses for determining their physical, mechanical, acoustic and radiation shielding properties with compositions of 25GdO–10CaO–10SiO-xEuO -(55-x) BO (where, x is 0.1, 0.2, 0.3, and 0.4 mol%). These glasses were theoretically analyzed using the Geant4 toolkit and Phy-X PSD software to calculate their performance
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Simulation and calibration of radiation monitoring of nuclear power plant containment sump waste liquid Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-04-01 Fei Li, Chu-yang Luo, Ying-zi Wen, Sheng Lv, Guo-qiang Zeng, Xiao-hui Liu, Chao Xiong
Waste liquid stored in the containment sumps of nuclear power plants may contain a variety of radionuclides. Real-time monitoring of containment sump waste liquid can ensure that accidents, such as leakage of cooling water, can be avoided. This paper presents the design of a radioactive monitoring system for waste liquid in a containment sump. The detector and the lead-shield in the measurement unit
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The spectrum-averaged cross section investigation of 117Sn(n,n')117mSn and 67Zn(n,p)67Cu reactions Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-30 Alena Krechlerová, Michal Košťál, Evžen Losa, Martin Schulc, Tomáš Czakoj, David Tisseur, Evžen Novák, Jan Šimon, Nicolas Thiollay
The spectrum averaged cross sections (SACS) in standard neutron field, e.g. Cf(s.f.), is a preferable tool for cross section evaluation and validation. A set of reaction measurements with high energy thresholds was previously performed. The presented work focuses on lower energy threshold reactions, namely on the inelastic scattering of the tin foil, more specifically the reaction Sn(n,n')Sn, and the
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Application of frequency characteristic extraction in increasing the accuracy of X-ray based thickness gauges used for aluminum alloys employing GMDH neural network Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-30 Abdulilah Mohammad Mayet, V P Thafasal Ijyas, M. Ramkumar Raja, Mohammed Abdul Muqeet, Neeraj Kumar Shukla
Radiation-based gauges have been widely utilized in the industry as a dependable, non-destructive method of measuring metal layer thickness. It is only possible to trust the conventional radiation thickness meter when the material's composition is known in advance. Thickness measurement errors are to be anticipated in contexts like rolled metal factories, where the real component of the material could
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Thermoluminescent dosimeters (TLD-100) for absorbed dose measurements in alpha-emitting radionuclides Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-29 Andrew J. White, Sean P. Jollota, Cliff G. Hammer, Ahtesham U. Khan, Larry A. DeWerd, Wesley S. Culberson
Early works that used thermoluminescent dosimeters (TLDs) to measure absorbed dose from alpha particles reported relatively high variation (10%) between TLDs, which is undesirable for modern dosimetry applications. This work outlines a method to increase precision for absorbed dose measured using TLDs with alpha-emitting radionuclides by applying an alpha-specific chip factor (CF) that individually
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Temperature-dependent photoluminescence of novel Eu3+, Tb3+, and Dy3+ doped LaCa4O(BO3)3: Insights at low and room temperatures Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-28 Abeer S. Altowyan, M.B. Coban, U.H. Kaynar, Jabir Hakami, M. Ayvacikli, A. Hiziroglu, N. Can
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Thermal neutron dose measurements using TLD-100 detectors in the IPEN/MB-01 reactor core Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-24 Tássio Antonio Cavalieri, Paulo de Tarso Dalledone Siqueira, Julian Marco Barbosa Shorto, Helio Yoriyaz
Considerable experimental effort has been aimed at uncovering a reliable way to perform a dosimetric assessment in mixed radiation fields. In fields composed by gammas and neutrons, TLD dosimeters are usually applied to execute such measurements, although there is no consensus on the most favorable strategy to employ them. In this context, TLD-100 measurements within two different core configurations
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Evaluation of 188Re- IBA as a novel radiopharmaceutical for bone marrow ablation Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-24 Hassan Ranjbar, Reza Bagheri, Seyed-Milad Miremad
In this study, Ibandronate as a third generation of bisphosphonates was labeled with rhenium-188 radionuclide. Production and quality control of Re-IBA radiopharmaceutical was investigated. The radiation absorbed dose of this radiopharmaceutical was evaluated for adult male based on biodistribution data in mice using the RADAR and Sparks and Aydogan methodologies. The Re-IBA was produced with more
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Accurate gamma-ray dose measurement up to 10 MeV by glass dosimeter with a sensitivity control filter for BNCT Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-22 F. Kamisaki, T. Inoue, K. Tomiyoshi, M. Matsuki, K. Aoki, S. Kusaka, S. Tamaki, F. Sato, I. Murata
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A study on the treatment of brain tumors with BNCT using several moderators with different thicknesses Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-22 Yinan Zhu, Zuokang Lin, Haiyan Yu, Xiaohan Yu
Boron neutron capture therapy (BNCT) is an effective binary radiation therapy that depends on nuclear capture reactions. In recent years, BNCT can be performed without a reactor owing to the development of accelerator-based neutron sources. A new BNCT irradiation facility is proposed, which is based on a 15 mA 2.5 MeV proton accelerator with a 100 μm thickness natural lithium target as a neutron converter
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JUNO high purity nitrogen plant Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-21 Xin Ling, Boxiang Yu, Zhilong Hou, Tao Hu, Li Zhou, Yongjun Yan, Zhihang Zhu, Xiao Cai, Yayun Ding, Jian Fang, Junyu shao, Lijun Sun, Xilei Sun, Yuguang Xie, Xiaohui Qi, Haodong Zhang
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kt low level radioactivity liquid scintillator detector in a laboratory 650 m underground. An excellent energy resolution and a large volume offer exciting opportunities for addressing many important topics in neutrino physics. High purity nitrogen is an important factor to ensure the low background of the JUNO detector. High Purity Nitrogen
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Independent isomeric yield ratios of fission products in the epi-cadmium neutron induced fission of 233U Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-20 H. Naik, R.J. Singh, S.P. Dange, W. Jang
The independent isomeric yield ratios (IR) of Sb, Te, I, Xe and Cs have been measured in the epi-cadmium neutron induced fission of U by using an off-line gamma-ray spectrometric technique. The average neutron energy of the epi-cadmium reactor neutron spectrum is 1.9 MeV. The root mean square fragment angular momenta () were deduced from the IR values by using spin dependent statistical model analysis
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Beta irradiation-induced thermoluminescence: Glow curve analysis and kinetic parameters in combustion-synthesized undoped Ca4YO(BO3)3 Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-20 A.Y. Madkhli, D.A. Jabali, G. Souadi, M. Sonsuz, U.H. Kaynar, S. Akça-Özalp, M. Ayvacikli, O. Madkhali, M. Topaksu, N. Can
This study examines the thermoluminescent (TL) properties of undoped CaYO(BO) phosphor, focusing on how it behaves under a variety of experimental conditions. The IRSL-TL 565 nm was chosen as the appropriate detection filter among various optical detection filter combinations. During the preheating trials conducted at a rate of 2 °C/s, the TL peak exhibited increased intensity, particularly around
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Study on induced radioactivity and individual dose evaluation in Gantry room for Varian ProBeam Proton Therapy System Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-19 Changli Luo, Wuyuan Li, Yang Li, Xilong Han, Bo Yang, Youwu Su, Shakhboz Khasanov, Xuebo Liu, Wang Mao, Weiwei Yan
Proton therapy has emerged as an advantageous modality for tumor radiotherapy due to its favorable physical and biological properties. However, this therapy generates induced radioactivity through nuclear reactions between the primary beam, secondary particles, and surrounding materials. This study focuses on systematically investigating the induced radioactivity in the gantry room during pencil beam
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Study of accelerator-based epithermal neutron flux depending on Li and Be targets Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-18 Hyunha Shim, Seong Hee Park
The Li(p,n) and Be(p,n) reactions are widely used as accelerator-based neutron sources for boron neutron capture therapy (BNCT). Because the energy of the neutrons produced by these reactions is high for BNCT, a moderator is required to reduce the energy to the epithermal energy region. The neutron yields and energy spectra derived from the Li(p,n) and Be(p,n) reactions vary with the incident proton
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A pilot study of diabetes effects on radiation attenuation characteristics of tibia and femur of rats Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-15 Yasin Gökçe, Ferdi Akman, Özge Kılıçoğlu, Yiğit Ali Üncü, Hasan Özdoğan
This study aimed to investigate the effect of diabetes on radiation attenuation parameters of the femur and tibia of rats using Monte Carlo Simulations. First, control and diabetic rats were identified and tibias and femurs were removed. Then, the elemental ratios of the bones obtained were calculated using EDS (Energy Dissipative X-ray Spectroscopy). Therefore, radiation permeability properties of
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Half-life determination of 215At and 221Ra with high-purity radioactive ion beams Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-13 S. Bara, E. Jajčišinová, T.E. Cocolios, B. Andel, S. Antalic, A. Camaiani, C. Costache, K. Dockx, G.J. Farooq-Smith, A. Kellerbauer, R. Lica, K.M. Lynch, P. Marini, M. Piersa-Siłkowska, S.T. Stegemann, M. Stryjczyk, D. Treasa, P. Van Duppen
At CERN-ISOLDE, high-purity radioactive ion beams of Fr and RaF were investigated with -decay spectroscopy at the CRIS and ASET experiments in the course of three different experimental campaigns. The half-life of At, -decay daughter of Fr, is measured to be 36.3(3)[9], and that of Ra was determined to be 26.2(1)[6]s, both of which are well in line with the trends in this region of the nuclear landscape
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Comparative study of the impact of interpad nominal length on the onset of the charge multiplication in standard segmented LGAD with 2 p-stops and bias ring as isolated structures Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-12 Gordana Laštovička-Medin, Jovana Doknic, Ivona Bozovic, Gregor Kramberger, Tomáš Laštovička, Jakob Andreasson, Mateusz Rebarz
We present an investigation of the interpad region (IP) in the Ultra-Fast Silicon Detector (UFSD) Type 10, utilizing a femtosecond laser and the transient current technique (TCT). We elucidate the isolation structure and measure the IP distance between pads, comparing it to the nominal value provided by the vendor. A comparison of sensors with identical layouts but different nominal IP distances (49 μm
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Yield estimation of radionuclides from 6,7Li-induced reactions: A comparative analysis for 97,95Ru Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-12 Ankur Singh, Moumita Maiti
The article reports the production yields of the medically relevant Ru radionuclides and other co-produced radionuclides from Li-induced reactions on Nb target within the 20–45 MeV energy range. The residues were measured employing the activation technique followed by the offline -spectroscopy. Statistical model calculations using EMPIRE3.2.2 code are employed to assess the optimized nuclear model
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Estimating the initial absorbed dose of radiation in dried figs using EPR spectroscopy Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-12 Katerina I. Aleksieva, Yordanka G. Karakirova, Krasimir G. Dimov
Dried figs were studied by Electron Paramagnetic Resonance (EPR) spectroscopy for identification of radiation treatment and dosage assessment. Gamma-irradiated samples show a multicomponent "sugar-like" EPR spectrum with line width of 6–8 mT, centered at g = 2.004. The investigation of the influence of the instrumental parameters microwave power and modulation amplitude on the EPR signal show saturation
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Characterization and mapping of the neutron fields around Bruce Power’s 177Lu isotope production system Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-11 Andrei R. Hanu, Jovica Atanackovic, Craige Boyd, Eric M. Johnston, Anthony J. Waker
Bruce Power operates a first-of-its-kind isotope production system (IPS) that enables continuous production of Lu within Canada Deuterium Uranium (CANDU) commercial power reactors. Located on the reactivity mechanisms deck of Unit 7, just outside of reactor containment but in close proximity to the primary heat transport (PHT) pumps, this facility offers unique advantages for Lu production. However
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Application of high-sensitivity radon monitor on walk-in type radon calibration chamber at KRISS Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-11 Hyun Su Lee, Sanghoon Hwang, Minji Han, Byoung-Chul Kim, Jong-Man Lee, Kyoung Beom Lee
This paper introduces the KRISS-Rn4, a high-sensitivity radon monitor with four detection cells, installed within a walk-in type radon calibration chamber at KRISS. The KRISS-Rn4 exhibits enhanced energy resolution through channel-by-channel signal processing and data acquisition. Results reveal that it achieves lower statistical fluctuations and faster response times in monitoring test atmospheres
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Trends of occupational exposure to ionizing radiation in Central China for the period 2000–2021 Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-11 Mengxue Li, Lei Deng, Wenshan Zhou, Yanfang Zhao, Tuo Wang, Shuxia Hao, Shengnan Fan, Jun Deng, Quanfu Sun
A retrospective analysis of occupational exposure to ionizing radiation from medical uses and industrial uses in the three provinces of Central China from 2000 to 2021 was conducted. The average annual effective dose in medical uses and industrial uses decreased from 2.042 mSv and 2.334 mSv in 2000–2002 to 0.476 mSv and 0.371 mSv in 2021 respectively; the fraction of monitored workers receiving annual
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Preliminary performance study of synthetic Alumina nanoparticles for retention of cobalt and cesium cations Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-07 O.A. Abdel Moamen, G.A. Dakroury, H.S. Hassan
In the present study, a facile nano-sized gamma alumina was synthesized and then examined for immobilization of cobalt and cesium ions individually from aqueous solutions. The comprehensive analysis of functional groups, phase composition, surface morphology and sorption characteristics of the synthesized nano-sized ϒ alumina was executed. It was deduced that acquired material was low-crystalline with
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Production of 117mSn and 119mSn by photonuclear reactions on natural antimony Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-07 M. Krmar, N. Jovančević, Ž. Medić, D. Maletić, Yu Teterev, S. Mitrofanov, K.D. Timoshenko, S.I. Alexeev, H. Marukyan, I. Kerobyan, R. Avetisyan, R. Dallakyan, A. Hakobyan, L. Vahradyan, H. Mkrtchyan, A. Petrosyan, H. Torosyan
Natural antimony targets were irradiated in a 60 MeV bremsstrahlung beam and gamma spectrometric measurements were performed. The goal was to establish the yield of Sn, a radionuclide with great potential for application in medicine. Considering that Sn is predominantly produced through a photonuclear reaction in which an charged particle is emitted (Sb(γ,p3n)), the yield of this tin isotope is much
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Induction of genetic variability of maize genotypes through radiation revealed mutants resistant to maize streak disease Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-06 Yayra Afram, Godwin Amenorpe, Elvis Asare Bediako, Alfred A. Darkwa, Siphiwokuhle Funani Shandu, Maryke T. Labuschagne, Isaac Kodzo Amegbor
The absence of genetic variability among crop genotypes is an impediment to breeding progress, hence mutagenesis could serve as a useful tool to create genetic variation to obtain desirable traits of interest. In this study, four maize genotypes, Obatampa, Dapango, Pann 54 and Honampa which were susceptible to maize streak disease (MSD) were acutely irradiated at 254.3 Gy, using a cobalt 60 (Co) at
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On the significance of the measurement evaluation method in decision making: A synthesis of JCGM 101 and JCGM 106 applied to gross alpha and gross beta measurements using LSC Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-06 H. Ramebäck, A. Tovedal, K. Norlin
In decision making, conformity to a specification like a reference value or a requirement, the decision rule applied shall be documented. Furthermore, if the measurement uncertainty is considered in the decision process the associated probability, or risk, that a measurement result is above (or below) a reference value shall be taken into account. In this work it is shown that for gross alpha and gross
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Excitation functions for fast neutron induced reactions on iron and lead Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-05 B. Liu, G. Tian, R. Han, F. Shi, H. Sun, Z. Chen, Z. Zhang, Q. Li, P. Luo
Cross sections of the Fe(n,p)Mn, Fe(n,)Cr, Fe(n,p)Mn and Pb (n,2n)Pb reactions induced by D–T neutrons were obtained with activation method and -ray spectrometry technique. Experimental values measured in this work are consistent with most of the previous literature data. These reactions cross sections were theoretically calculated by using the TALYS-1.96 and EMPIRE-3.2.3 codes from threshold up to
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Automated radiosynthesis of [18F]DPA-714 on a commercially available IBA Synthera® Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-05 Amy L. Vāvere, Arijit Ghosh, Victor Amador Diaz, Allison J. Clay, Peter M. Hall, Kiel D. Neumann
The goal of this work was to develop a reliable method to produce the well-validated microglial activation PET tracer, [F]DPA-714, routinely for clinical and preclinical research using an IBA Synthera®. Optimization of literature methods included reduced precursor mass and use of TBA HCO as the phase transfer agent in place of Kryptofix® 222 in a 65-min synthesis with an average activity yield of 24
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Assessment of radiological hazards from radioactivity natural of cement used in Dwellings in Rio de Janeiro, Brazil Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-03 Leandro Barbosa da Silva, Lucas Faria da Silva, Vanderlei Bruno Junior, Carlos Omar Pastrana Orejuela, Paulo Roberto Rocha Ferreira, Ademir Xavier da Silva
Brazil is the fourth largest cement consumer in the world and the largest producer in Latin America, around 1.3% of global production. The main inputs in the manufacture of cement are limestone and clay. Few studies have been carried out in the country on the risk of these materials used in civil construction. Therefore, the objective of this present work is to evaluate the radiological danger that
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Methodology for measuring photonuclear reaction cross sections with an electron accelerator based on Bayesian analysis Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-02 Saverio Braccini, Pierluigi Casolaro, Gaia Dellepiane, Christian Kottler, Matthias Lüthi, Lorenzo Mercolli, Peter Peier, Paola Scampoli, Andreas Türler
Accurate measurements of photonuclear reaction cross sections are crucial for a number of applications, including radiation shielding design, absorbed dose calculations, reactor physics and engineering, nuclear safeguard and inspection, astrophysics, and nuclear medicine. Primarily motivated by the study of the production of selected radionuclides with high-energy photon beams (mainly Ac, Sc, and Cu)
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Simulation of defect detection for the buried petroleum pipe by the X-ray backscatter imaging Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-02 Hui Li, Liang He, Hua Li, Deyuan Li
Ensuring the integrity, safety, and compliance of oil pipelines is crucial for operators. Two significant factors affecting pipeline integrity are metal loss due to corrosion or air gouging and the presence of cracks. This paper introduces an X-ray backscatter nondestructive testing model on a smart pig(an intelligent robot) for internal inspection of petroleum pipelines. The paper investigates the
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A method of determining the bremsstrahlung flux-weighted average photonuclear cross section Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-01 V.L. Uvarov, A.A. Zakharchenko, N.P. Dikiy, Yu V. Lyashko, R.I. Pomatsalyuk
Based on a developed analytical model, a method is proposed for measuring the photonuclear cross section averaged over bremsstrahlung flux without application of additional target-monitor of photon flux. The method involves the use of a thin isotopic target, that completely overlaps the photon beam (a photonuclear converter), as well as an algorithm for processing the data on the yield of a reaction
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On the gamma radiation response of commercially available 3D printing materials for medical dosimetry Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-03-01 A. Alfuraih, O. Kadri, F. Fakhouri
3D printing technology has rapidly spread for decades, allowing the fabrication of medical implants and human phantoms and revolutionizing healthcare. The objective of this study is to evaluate some radiological properties of commercially available 3D printing materials as potential tissue mimicking materials. Among fifteen materials, we compared their properties with nine human tissues. In all materials
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The impact of the broad range of gamma doses on follow-up fission fragment track parameters in CR-39 radiation detector Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-28 S.M. Othman, I.A. El-Mesady, A.S. El-badawy, E.H. Ghanim
In this study, the effect of high γ-doses on the track parameters, structure as well as optical properties of pristine and γ-irradiation CR-39 nuclear track detector (NTD) were investigated. CR-39 detectors were exposed to γ-doses from 50 up to 500 kGy and then irradiated by fission ions (F.F) of fluence from CF source. The track diameter (D), bulk etch rate (V), etch induction time (EIT), cut-off
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Physical, structural and nuclear radiation shielding behavior of Ni–Cu–Zn Fe2O4 ferrite nanoparticles Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-28 Kalidas B. Gaikwad, Ketan P. Gattu, Chaitali V. More, Pravina P. Pawar
In this study, Ni–Cu–Zn FeO ferrite nanoparticles have successfully been synthesized utilizing the Co-precipitation technique. The primary objectives encompassed elucidating phase purity, discerning functional groups, scrutinizing surface morphology, and conducting structural analyses. To accomplish these objectives, a battery of advanced characterization techniques was employed, including power X-ray
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Use of air things radon detector in liquid samples (serum and urine) Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-28 Abdulhussein A. Alkufi, Ali Abid Abojassim, Mohanad H. Oleiwi
This study involved the assessment of Rn concentrations in liquid samples (namely serum and urine) obtained from individuals who were smokers and non-smokers across five distinct age groups in the Najaf Governorate of Iraq. The measurements were conducted using a portable digital Air Things device commonly employed for detecting radon gas in residential environments. This device was placed in a container
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A new empirical formula for calculation of (n,3n) cross sections of heavy mass nuclei in the energy region 22–27.5 MeV Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-28 Mustafa Yiğit, Mehmet Eraslan
In this paper we want to study (n,3n) reactions using an empirical formula derived on the basis of the statistical model considering reaction -value dependence. This formula was obtained by taking into account the exponential dependence on asymmetry parameter for neutron-induced reactions in Levkovskii's empirical formula. In addition, the present formula depends also on incident energy , reaction
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Efficient uptake of 85Sr and 60Co using fabricated inorganic sorbent for reducing radiation doses of simulated low-level waste Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-28 R.M. Maree, N.A. Kotb, M.R. Abass
The present study investigated the sorption behavior of Sr and Co radionuclides from aqueous solutions onto tin molybdate (SnMo) sorbent. SnMo has been synthesized using the precipitation method and was characterized using four analytical techniques including FT-IR, XRD, SEM, and XRF. The sorption studies applied on Sr and Co include the effect of shaking time, pH, concentration, and saturation capacity
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A series of high-sensitivity radon detection systems and their applications in nitrogen as well as the boil-off liquid nitrogen measurement Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-28 Fan Wang, Hao Wang, Zhi Zeng, Jinmin Yang, Kang Peng, Lei Zhang, Qiuju Guo
In modern rare-event search experiments such as neutrino experiments and dark matter search experiments, radon is one of the most important radiation backgrounds since it can emanate from nearly all the materials containing radium and migrate freely in the experiment system. To support the China Dark Matter Experiment (CDEX) at China Jinping Underground Laboratory (CJPL), a series of high-sensitivity
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Modeling of liquid-liquid hollow fiber supported membrane equilibrium including the non-ideality of the aqueous and organic phases in the recovery systems of radionuclides in sulphate-halide/aliquat-336 in O-xylene Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-27 A.T. Kassem, Mahmoud M.S. Ali
Study of modeling of L/LHFSLM equilibrium based on the Non-ideality of the Aqueous and Organic Phases in the Recovery of Eu in HSO-Halides/Aliquat-336 in 20% kerosene as feeding phase at pH 3.78–4.55, by the ratio 89.7%,while separation of Sr and Cs there was a problem between them by using hollow HFSLM only, the reason for that the organic solvents affect the rate of reaction in the Diamino-1,2-c
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Investigation of the OAM EM wave tissue irradiation at millimeter-wave frequencies Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-27 Andjelija Ž. Ilić, Jelena Z. Trajković, Slobodan V. Savić, Milan M. Ilić
Recently, there has been an increase of interest in the use of electromagnetic (EM) waves with helical wavefronts, known as the orbital angular momentum (OAM) waves. Applications in the field of biomedicine have been foreseen, such as medical imaging and diagnosis, deep-tissue imaging, biosensing, and communication with medical implants. Other possible applications include various localized tissue
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Characterization of flux distribution in the pool of the RMC SLOWPOKE-2 Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-27 D.A. Huston, P. Samuleev, F. Kelly, E.C. Corcoran
The neutron flux distribution within the pool of the SLOWPOKE-2 reactor at the RMC has been characterized using neutron activation measurements as well as MCNP simulations. Westcott equivalent thermal neutron flux values were calculated from measured activities of solutions of Co, Au, and Cd-shielded Au at several reactor flux settings and compared to tabulated fluxes from MCNP simulations. Good agreement
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Optimization and automation of the radiosynthesis of [18F]Lu-LuFL as a clinically useful PET ligand targeting FAP for tumor imaging Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-27 Lei Peng, Tianhong Yang, Dake Zhang, Renbo Wu, Fuhua Wen, Jianbo Liu, Xingjin He, Xiangsong Zhang, Zhihao Zha
Recently, a novel radiohybrid tracer [F]Lu-LuFL targeting the fibroblast activation protein (FAP) has been developed for PET imaging of solid tumors. This tracer has shown promising results, prompting us to conduct a first-in-human study to evaluate its efficacy for PET imaging of FAP in human body. In order to facilitate the routine production and clinical application of [F]Lu-LuFL, a straightforward
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Performance evaluation of a 71Ga(n,γ)72Ga reaction-based epithermal neutron flux detector at an AB-BNCT device Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-25 Xingcai Guan, Huangxin Wu, Rui Bai, Guanghua Wu, Wenliang Yang, Wuliang Guo, Haixi Wang, Yongquan Wang, Junliang Du, Lu Zhang, Long Gu
The Ga(n,γ)Ga reaction-based epithermal neutron flux detectors are novel instruments developed to measure the epithermal neutron flux of boron neutron capture therapy (BNCT) treatment beams. In this study, a spherical epithermal neutron flux detector using Ga(n,γ)Ga reaction was prototyped. The performance of the detector was experimentally evaluated at an accelerator-based BNCT (AB-BNCT) device developed
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Radiation-induced modification effects in covalent-network glass formers: Phenomenological description within unified configuration-enthalpy model Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-24 Oleh Shpotyuk, Mykola Vakiv, Andriy Kovalskiy, Roman Golovchak, Valentina Balitska, Mykhaylo Shpotyuk
Externally-induced modification activated by high-energy excitation such as γ-irradiation from Co source is analyzed in chalcogenide glasses in terms of radiation-structural and glass-relaxation metastability, at the example of sulphides (including stoichiometric arsenic trisulphide, AsS) and selenides. Unified evolving conjugated (free energy in dependence on configuration coordinate) and (temperature
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Investigation of NK cell function against two target hematological cell line using radioactive chromium assay Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-24 V, l, a, d, i, m, i, r, , J, u, r, i, š, i, ć
NK (Natural killer) cells are a special population of peripheral blood lymphocytes that kill virus-infected cells as well as tumor cells. For testing NK cell function, the classic gold standard assay has been used for a long time, determining the activity from target tumor cells using radioactive chromium in cell cultures for 4h. In this study two hematological cell lines K562 and MDS where used and
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Evaluation of gamma irradiation effects on antioxidant capacity of propolis Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-24 Ralitsa B. Mladenova, Nikolay Y. Solakov, Kamelia K. Loginovska
The irradiation effects on antioxidant potential and on content of phenolic compounds of propolis ethanoic extracts were studied. It was found out that gamma treatment of samples with 2 and 10 kGy had a weak decreasing effect on the total phenolic content (TPC), while no change was observed in the propolis irradiated with 5 kGy. The antiradical activity of extracts was assessed by the DPPH free radical
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Airborne 210Pb, Si, Zn and Pb as tracers for atmospheric pollution in Helsinki metropolitan area Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-24 Eleftheria Ioannidou, Stefanos Papagiannis, Manousos Ioannis Manousakas, Mika Vestenius, Konstantinos Eleftheriadis, Jussi Paatero, Lambrini Papadopoulou, Alexandra Ioannidou
This study analyzed 16070 daily and 608 weekly air filter samples from the Helsinki metropolitan area collected between 1962 and 2005. The aim was to use the Potential Source Contribution Function (PSCF) to determine potential sources of silicon (Si), zinc (Zn), lead (Pb), and radioactive isotope Pb. The main sources for Si and Pb were industrial activities, particularly mining, metal industry, and
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Evaluation of derived concentration guideline levels reflecting the site-specific data for the soil of the Korea research reactor unit 1 and 2 Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-24 Geun-Ho Kim, Ilgook Kim, Min-Seong Kim, Ji Woo Kim, Kwang Pyo Kim
The purpose of this study is to evaluate the derived concentration guideline levels for unrestricted site reuse the Korea research reactor unit 1 and 2. Distribution coefficients for Co-60 and Sr-90 were derived, and site-specific values of the KRR soil were applied for the DCGLs for the seven target nuclide. The distribution coefficients of Co-60 and Sr-90 were 6,128 and 86.0 mL/g. The DCGLs derived
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Design of simulated-gas calibration source and self-attenuation correction methods for radioactive noble gas measurement with HPGe detector Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-23 Shuo Wang, Fei Tuo, Xiang-ping Qiu, Yang Xiao, Jun-cheng Liang
In this study, to achieve accurate measurement of radioactive noble gas and enhance the precision of efficiency calibration, a relatively low-cost and low-density simulated-gas calibration source (SGCS) was produced from polyurethane foam with a density of = 0.098 g cm. Using SGCS with a Marinelli beaker geometry, the efficiency calibration was applied to a BE5030, 50.5% relative efficiency HPGe detector
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A new evaluation of the decay data for 166Ho Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-23 B.E. Zimmerman
The β-emitter Ho is of interest as a potential radiolabel for therapeutic medical applications. A new decay data evaluation for Ho has been performed using the Decay Data Evaluation Project (DDEP) methodology. New recommended values for the half-life, γ-ray emission probabilities, β branching ratios, and other relevant nuclear and atomic data are provided. This paper provides a summary of the evaluation;
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Emission characteristics of pulse CNT cold cathode X-ray source combined with channel electron multiplier Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-22 Kai Miao, Yunpeng Liu, Sheng Lai, Junqiu Yin, Feixu Xiong, Xiaoyu Dong, Xiaobin Tang
Carbon nanotube (CNT)-based field emission X-ray source with the advantage of fast start-up response offers the chance to achieve high-frequency X-ray emission. In this study, a high-frequency random pulse X-ray source of CNT cold cathode combined with a channel electron multiplier (CEM) was built, and its direct current (DC) and pulse emission characteristics were tested. The DC measurement results
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Study of the effect of implantation temperature on the migration behaviour of Xe implanted into glassy carbon Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-22 M.Y.A. Ismail, Z.A.Y. Abdalla, E.G. Njoroge, T.T. Hlatshwayo, J.B. Malherbe, A.J. Innocent, Huzifa M.A.M. Elnour
The effect of implantation temperature on the migration behaviour of xenon (Xe) implanted into glassy carbon and the effect of annealing on radiation damage retained by ion implantation were investigated. Glassy carbon substrates were implanted with 320 keV Xe to a fluence of 2 × 10 cm. The implantation process was performed at room temperature (RT) and 100 °C Some of the as-implanted samples were
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Assessment of occupational external radiation exposure of workers in the Southwest of Libya using portable NaI detector Appl. Radiat. Isot. (IF 1.6) Pub Date : 2024-02-21 Usama Elghawi, Meftah Elammari
In this study, gamma dose rates generated from the naturally occurring radioactive materials (NORM) were measured in the waste streams of a large scale and sludge onshore petroleum operations. Measurements conducted in this work involved: sludge recovery from separation tanks, sludge forming, NORM storage, scaling in oil tubulars, scaling in gas production and sedimentation in produced water evaporation