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EURADOS intercomparison for whole-body neutron dosemeters from 2012 to 2022 Radiat. Meas. (IF 2.0) Pub Date : 2024-04-18 Elena Fantuzzi, Marie-Anne Chevallier, Michael Hajek, Sabine Mayer
Within the EURADOS (European Radiation Dosimetry Group) self-sustained programme of regular intercomparisons (ICs) for individual monitoring, three campaigns had been performed in 2012, 2017 and 2022 to assess the performance of neutron personal dosemeters routinely used to measure personal dose equivalent, (10). The irradiation schemes were established to provide participants with useful information
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Corrigendum to “Unfolding neutron spectra using splines” [Radiat. Meas. 173 (2024) 107098] Radiat. Meas. (IF 2.0) Pub Date : 2024-04-18 David Trunec, Věra Mazánková, Filip Mravec, Zdeněk Matěj
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Portable gamma-ray instrumentation for inspecting pipe wall thickness: Monte Carlo and experimental investigations Radiat. Meas. (IF 2.0) Pub Date : 2024-04-18 Amandeep Sharma, Mohinder Singh, Bhajan Singh, B.S. Sandhu
This study aims to assess the efficacy of low energy gamma-ray based instrumentation for inspecting the wall thickness of metallic pipes in industrial situations. The primary motivation behind this work is to explore the feasibility of using a Monte Carlo approach, specifically FLUKA simulations, for radiation-based industrial applications. To achieve this objective, laboratory experiments and FLUKA
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Advancing 2D reaction rate measurements in BNCT: Validation of the indirect neutron radiography method Radiat. Meas. (IF 2.0) Pub Date : 2024-04-17 Xinyu Wang, Diyun Shu, Changran Geng, Xiaobin Tang, Yuan-Hao Liu
The precise characterization of neutron beams is a cornerstone of Boron Neutron Capture Therapy (BNCT). While Instrumental Neutron Activation Analysis (INAA) is the standard technique for neutron flux measurement, it is limited in its ability to capture two-dimensional (2D) reaction rate distributions. This study aims to validate the Indirect Neutron Radiography (INR) method for 2D reaction rate quantification
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Do attenuation coefficients based on luminescence bleaching fronts reflect true light attenuation in rocks? Radiat. Meas. (IF 2.0) Pub Date : 2024-04-17 Furong Cui, Myungho Kook, Andrew Sean Murray, Jintang Qin, Jinfeng Liu, Mayank Jain
The emerging technique of rock surface luminescence dating employs a double-exponential fitting dating model based on the Bouguer-Lambert law. The accuracy of exposure age determination is sensitive to the light attenuation coefficient, μ, which is usually derived from fitting the luminescence profile as a function of depth into the rock. Alternatively, μ might be determined by direct measurement using
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Preliminary analyses of radiophotoluminescence centers in a recently developed Ag-doped alkali-phosphate glass (SAPANS) Radiat. Meas. (IF 2.0) Pub Date : 2024-04-16 Hiroshi Yasuda, Hiroki Kawamoto, Keisuke Asai, Yasuhiro Koguchi
The mechanism behind radiophotoluminescence (RPL) emission in Ag-doped alkali-phosphate glass remains unclear. To contribute to resolving this issue, the authors measured and analyzed the temporal change of electron spin/paramagnetic resonance (ESR) spectrum of a recently developed, weather-resistant RPL glass, named “SAPANS,” after irradiation with X-rays. As a result, a continuous gradual increase
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Identification of α particles and fission fragments emitted by 252Cf using a fission time projection chamber Radiat. Meas. (IF 2.0) Pub Date : 2024-04-16 Jiajun Zhang, Jun Xiao, Junjie Sun, Mingzhi Zhang, Taiping Peng, Pu Zheng
The time projection chamber (TPC) is based on detailed recording of particle ionization processes and can achieve three-dimensional measurement of particle tracks. Therefore, it has broad application prospects in fission cross section measurement. This paper introduces a TPC for measuring fission cross sections and tests the particle identification ability of this detector using aCf source. The measured
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Radioluminescence-based fibre-optic dosimeters in radiotherapy: a review Radiat. Meas. (IF 2.0) Pub Date : 2024-04-15 Ivan Veronese, Claus E. Andersen, Enbang Li, Levi Madden, Alexandre M.C. Santos
Since their conception in the early 1990s, radioluminescence-based fibre-optic dosimeters (FODs) have attracted great interest for dosimetric applications in radiotherapy (RT). Over the years, many scintillating materials, both organic and inorganic, have been developed and tested by multiple research groups around the world. In parallel, reliable techniques for removing or subtracting the stem effect
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Quasi-monochromatic gamma beam modulation at SLEGS Radiat. Meas. (IF 2.0) Pub Date : 2024-04-15 Z.R. Hao, G.T. Fan, H.H. Xu, L.X. Liu, Y. Zhang, H.W. Wang, Y.X. Yang, S. Jin, K.J. Chen, Q.K. Sun, Z.W. Wang
Basing on the slant Compton scattering of 10640 nm photons from a 100 W CO laser on 3.5 GeV electrons from the Shanghai Light Source, the Shanghai Laser Electron Gamma Source (SLEGS) produces gamma-ray in the energy range of 0.66 MeV–21.7 MeV and flux of 10–10 photons/s. A Gamma Modulation System (GMS) composed of the collimators, attenuator, beam spot imaging(MiniPIX) and flux monitor(LaBr detector)
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Assessing whether a thermoluminescence peak at ∼100 °C in calcitic opercula can be used to monitor thermal reproducibility Radiat. Meas. (IF 2.0) Pub Date : 2024-04-08 D. Colarossi, G.A.T. Duller, H.M. Roberts
The opercula of the gastropod is composed of calcite and exhibits three main thermoluminescence peaks at ∼100, 280 and 360 °C when heated at 0.5 °C.s. The two higher temperature peaks can be used for geological and archaeological dating, whilst the lower temperature peak has a lifetime of hours and is only seen after laboratory irradiation. This study explores whether this lower temperature TL peak
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Quantitative assessment of signal and noise properties of mammography digital detectors Radiat. Meas. (IF 2.0) Pub Date : 2024-04-08 Alessandra Maia Marques Martinez Perez, Laura Alcantara Silva Lopes, Renato França Caron, Bruno Beraldo Oliveira, Linda Viola Ehlin Caldas, Martin Eduardo Poletti
Recent measurements introduced in quality control protocols indicate large variations in the evaluated parameters, pointing out as their main cause the different detectors used. The objective of this work was to characterize, in terms of signal transfer property (STP) and noise component analysis (NCA), six mammography digital detectors at different DAK levels for a variety of beam qualities. A Carestream
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Position-dependent light yield in short, coated SCSF-78 scintillating fibers Radiat. Meas. (IF 2.0) Pub Date : 2024-04-08 Martin J. Losekamm, Stephan Paul, Thomas Pöschl
In fibers made from organic plastic scintillators, a combination of extrinsic and intrinsic effects results in the attenuation of light and thus in a position-dependent light yield. The trapping of photons can further be affected if fibers are coated with or wrapped in a light-absorbing or reflecting material to suppress optical cross-talk. These effects have frequently been studied for long () fibers
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Electronic structure calculations of defect states in Ti-doped LiF Radiat. Meas. (IF 2.0) Pub Date : 2024-04-07 Guerda Massillon-Jl, Conrad S.N. Johnston, Lorenzo Stella, Jorge Kohanoff
This work investigates, using density functional theory (DFT), the localization of electrons and holes produced by irradiation in LiF crystals doped with Ti. We show that the Ti can act either as an electron trap, when located at an interstitial position of the LiF lattice, or as a trap for holes by substituting a Li atom. We also observe that an excess electron is localized in a Ti while a hole localizes
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Results of the EURADOS 2022 intercomparison for neutron personal dosemeters (IC2022n) Radiat. Meas. (IF 2.0) Pub Date : 2024-04-04 Michael Hajek, Marie-Anne Chevallier, Elena Fantuzzi, Sabine Mayer
The European Radiation Dosimetry Group (EURADOS) has initiated a regular, self-sustaining interlaboratory comparison scheme to test the performance of individual monitoring services. The 2022 intercomparison for neutron personal dosemeters (IC2022n) was the third campaign involving devices routinely applied to measure personal dose equivalent, (10), in neutron fields. The exercise was attended by 29
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Direct and indirect determination of track etch parameters after sequential UV-C exposure and etching for two swift heavy ions in PADC: Production of rocket-shaped tracks Radiat. Meas. (IF 2.0) Pub Date : 2024-04-03 E.M. Awad, E. Bebers, A. Habib, S. Hassan, M. Fromm
The present work aimed to study the effect of single-sided UV-C successive exposures and sequential chemical etching on the different track parameters of bulk etch rate, , detector diameter, , detector length, , track etch rate, , detection sensitivity, and etched track shape. For this, PADC detectors initially irradiated with high energy-long range ions of 7 GeV and 17.48 GeV were used. Fission fragment
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Investigation of skin dose of post-mastectomy radiation therapy for the halcyon and tomotherapy treatment machine: Comparison of calculation and in vivo measurements Radiat. Meas. (IF 2.0) Pub Date : 2024-04-03 Hikmettin Demir, Osman Vefa Gul, Telat Aksu
In treatments such as post-mastectomy radiation therapy (PMRT) for breast cancer patients, skin doses are of great importance in terms of tumor control and side effects. This dosimetric study aimed to measure the skin dose on the chest wall surface for post-mastectomy radiotherapy with Tomotherapy and Halcyon devices using thermoluminescence dosimetry (TLD) and to evaluate the accuracy of the skin
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Influence of cracks on open-loop measurement of radon exhalation rate on soil surface Radiat. Meas. (IF 2.0) Pub Date : 2024-04-03 Ruomei Xie, Jianfeng Tang, Huiying Li, Zhongkai Fan, Shuaibin Liu, Fen Lin, Tao Hu, Shuai Yuan, Haibo Yi, Jiale Sun, Zhipeng Liu, Jiulin Wu, Hongzhi Yuan, Dong Xie, Yanliang Tan
The open-loop method of measuring soil radon exhalation rate is widely used to explore the influence of environmental factors on soil radon exhalation rate because it can continuously monitor and quickly respond to changes in soil radon exhalation rate. However, in the open-loop measurement, the ventilation chamber is connected to the outside environment, and under the action of the pump, the ventilation
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Influence of short lived radon and thoron progeny on the γ-spectroscopic analysis of low activity environmental and aerosol samples Radiat. Meas. (IF 2.0) Pub Date : 2024-04-02 Iason K. Mitsios, Nick P. Petropoulos, Marios J. Anagnostakis
In this work, the influence of radon and thoron progeny photons in γ-spectrometry analysis is thoroughly investigated. To this end three sampling and analysis campaigns were organized at the γ-spectrometry laboratory of Nuclear Engineering Laboratory of the National Technical University of Athens (NEL-NTUA), combining measurements of radon and its progeny via an ALPHAGUARD-ALPHAPM set up with background
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Retrospective EPR dosimetry in glass and tooth enamel – The methodology and results of MUG group in RENEB 2021 inter-laboratory comparison Radiat. Meas. (IF 2.0) Pub Date : 2024-04-02 B. Ciesielski, A. Marciniak, M. Juniewicz
Electron Paramagnetic Resonance (EPR) is recognized method in retrospective dosimetry, based on detection of stable paramagnetic centres induced by radiation in biological materials, like enamel, bones, nails, or artificial materials, like glasses and other. EPR dosimetry in glass and enamel were included, in addition to several biological dosimetry tests, in the recent intercomparison project RENEB
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Unfolding neutron spectra using splines Radiat. Meas. (IF 2.0) Pub Date : 2024-04-01 David Trunec, Věra Mazánková, Filip Mravec, Zdeněk Matěj
Organic scintillators detect neutrons by scattering reactions with hydrogen nuclei (protons) in organic compounds. The recoil protons then produce the light output from the scintillator. The energy spectrum of neutrons impinging on the scintillator has to be determined from this light output using a so-called unfolding algorithm. However, this problem is ill-posed and therefore difficult to solve.
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OSL signal of electronic components from portable radios for radiation accident dosimetry Radiat. Meas. (IF 2.0) Pub Date : 2024-03-30 Simon Fleuriot, Céline Bassinet
The portable radio (hand-held device) is the preferred means of communication for the first responders from the homeland security forces and is systematically carried during intervention. This electronic device could therefore be a good candidate as a possible fortuitous dosimeter to estimate the dose received by the members of these security forces in the event of a radiological accident. For this
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Study on radon release behaviors of the tubular flow-through radon source with natural radium-bearing materials Radiat. Meas. (IF 2.0) Pub Date : 2024-03-30 Yongjun Ye, Huali Zuo, Zhongran Dai, Le Zhou, Ming Xia
To obtain a radon source that is easy to access natural radium-bearing raw material and does not require the approval of relevant departments, the tubular flow-through radon source using radium-bearing ore as the radon-generating material was designed. Based on the theories of radon diffusion-convection migration in porous media, the simplified calculation formula and numerical calculation models of
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A system for mailed dosimetric audits of 192Ir and 60Co HDR brachytherapy combining OSLD and radiochromic film Radiat. Meas. (IF 2.0) Pub Date : 2024-03-27 Laura Oliver-Cañamás, Juan J. Rovira-Escutia, Javier Vijande, Cristian Candela-Juan, Jose Gimeno-Olmos, Mª Carmen Pujades-Claumarchirant, Jose Ángel Martínez-Navarro, Antonio Zaragozá-Carrillo, Francisco García-Cases, Facundo Ballester, Jose Perez-Calatayud
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Optically-stimulated luminescence and thermoluminescence properties of RbI:Eu single crystals Radiat. Meas. (IF 2.0) Pub Date : 2024-03-25 Keiichiro Miyazaki, Daisuke Nakauchi, Yuma Takebuchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Optically-stimulated luminescence (OSL) and thermoluminescence (TL) properties of RbI:Eu single crystals synthesized by the vertical Bridgman-Stockberger method were evaluated. OSL peak at 430 nm due to 4f5d-4f transition of Eu was observed under stimulation at 750 nm. The 0.5% Eu-doped sample exhibited the highest OSL intensity among all the sample, and the detection limit was 1 mGy. TL glow peaks
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Thermally stimulated luminescence properties of Mn-doped MgAl2O4 translucent ceramics Radiat. Meas. (IF 2.0) Pub Date : 2024-03-24 Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
MgAlO translucent ceramics doped with Mn were fabricated by spark plasma sintering, and optical and dosimetric properties were evaluated. The 1% Mn-doped MgAlO translucent ceramic exhibited a photoluminescence emission peak at 520 nm due to Mn. Thermally stimulated luminescence (TSL) glow peaks of the Mn-doped MgAlO translucent ceramics were observed at around 60 and 260 °C. Moreover, the TSL intensity
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Comparative study on the impact of storage conditions on ESR signals in fingernail dosimetry Radiat. Meas. (IF 2.0) Pub Date : 2024-03-23 Samayeh Azariasl, Hiroshi Yasuda
Human fingernails in combination with electron spin/paramagnetic resonance (ESR/EPR; hereafter “ESR”) spectroscopy have high potential as an individual dosimetry tool in radiological accidents. For the practical realization of this technique, it is necessary to reduce the uncertainty due to the instability of ESR signals affected by both individual and environmental factors. In the present study, we
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Artificial formation of alpha recoil tracks using an americium source Radiat. Meas. (IF 2.0) Pub Date : 2024-03-22 Taiki Nakashima, Noriko Hasebe, Akihiko Yokoyama, Norihiro Yamada, Koichi Takamiya, Yuto Iinuma
Alpha recoil track (ART) is a lattice defect formed by the alpha decay of U, U, Th, and their daughter products. The age since the start of ART accumulation can be estimated using the number of ARTs and the uranium and thorium concentrations, given the known decay constants of uranium and thorium. It is necessary to investigate mineral surface properties, appropriate etching conditions, and the ART
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Evaluation of TL and OSL signals of MgB4O7:Tm,Li prepared by the solution combustion method Radiat. Meas. (IF 2.0) Pub Date : 2024-03-21 Alcilene C. Silva, Lucas M.F. Amorim, Aricia Cruz, Viviane K. Asfora, Vinícius S.M. de Barros, Charles N.P. Oliveira, Pedro L. Guzzo, Helen Jamil Khoury
Magnesium tetraborate (MgBO) doped with rare-earth elements is recognized for its suitability in thermoluminescence (TL) dosimetry due to its low effective atomic number (Z = 8.4) and the potential applications in neutron dosimetry. The study investigates the luminescent (TL and OSL) properties of MgBO doped with thulium (Tm) and lithium (Li). Samples were synthesized using the solution combustion
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Converter thickness optimisation using Monte Carlo simulations of Fluorescent Nuclear Track Detectors for neutron dosimetry Radiat. Meas. (IF 2.0) Pub Date : 2024-03-16 Stefan Schmidt, Alberto Stabilini, Long-Yang J. Thai, Eduardo G. Yukihara, Oliver Jäkel, José Vedelago
Secondary neutrons generated during ion beam radiotherapy present a concern due to the potential dose deposition beyond the treatment volume, thereby elevating the risk of inducing secondary tumours. These neutrons can possess energies comparable to those of the primary ions, reaching magnitudes of several hundred MeV, posing a challenge for neutron detectors. Fluorescent Nuclear Track Detectors (FNTDs)
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Effect of alpha irradiation on the saturation characteristics of fine-grained quartz OSL Radiat. Meas. (IF 2.0) Pub Date : 2024-03-15 Junjie Zhang
A negative relationship has been reported for the characteristic saturation dose (D) of the quartz optically stimulated luminescence (OSL) signal and the quartz grain size, of which the mechanism is still not understood. Here, the natural coarse-grained quartz samples (63–90 μm, 90–125 μm) are artificially ground into fine grains and the effect of alpha irradiation on the D values of the ground fine
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Personnel dosimetry for the mixed beta (Kr-85)/photon (gamma, X-ray) beams using Harshaw 8814 TL dosimeters: Performance Test Applicability Study Radiat. Meas. (IF 2.0) Pub Date : 2024-03-11 S. Sholom, B. Hooda, S. Sengupta, D. Jones, N. Foster
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Characterisation of a customised 4-chip Timepix3 module for charged-particle tracking Radiat. Meas. (IF 2.0) Pub Date : 2024-03-07 L. Kelleter, S. Schmidt, M. Subramanian, L. Marek, C. Granja, J. Jakubek, O. Jäkel, J. Debus, M. Martisikova
Ion-beam radiotherapy is a growing cancer treatment modality because it offers a superior dose distribution in the patient compared with conventional radiotherapy using X-rays. Thanks to their versatility, application-specific integrated circuits (ASIC) increasingly gain interest for research into ion imaging and ion-beam characterisation. Timepix3 is a hybrid semiconductor pixel detector, which offers
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Enhanced high-spatial resolution radiographic images based on COTS CMOS image sensors applied to wood dendrochronology and densitometry Radiat. Meas. (IF 2.0) Pub Date : 2024-02-28 Damian Leonel Corzi, Jose Lipovetzky, Fabricio Pablo Alcalde Bessia, Laura Baqué, Anne-Sophie Sergent, Martín Pérez, Miguel Sofo Haro, Ignacio Carlos Artola Vinciguerra, Alejandro Martinez-Meier, Guillermina Dalla-Salda, Santiago Agustín Varela, Mariano Gómez Berisso
The imaging of wood samples using X-rays for the study of dendrochronology and densitometry is predominantly conducted through analog films subsequently digitized or, in more advanced instances, with expensive flat-panel systems characterized by resolutions on the order of tenths of microns. For this reason, this work proposes as an alternative the utilization of Commercial-Off-The-Shelf (COTS) complementary
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Chasing snails: Automating the processing of EMCCD images of luminescence from opercula Radiat. Meas. (IF 2.0) Pub Date : 2024-02-27 G.A.T. Duller, H.M. Roberts
Opercula of the gastropod are composed of calcite, and are typically 2–4 mm in length. They emit a thermoluminescence (TL) signal that can be used for dose reconstruction, and spatially resolved TL data from them can be obtained using an electron multiplying charge coupled device (EMCCD). However, when multiple measurements are made of the same sample with imaging detectors such as the EMCCD, registering
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Detection of proton tracks with LiF fluorescent nuclear track detectors Radiat. Meas. (IF 2.0) Pub Date : 2024-02-27 P. Bilski, B. Marczewska, M. Sankowska, A. Kilian, J. Swakoń, Z. Siketić, P. Olko
Fluorescent nuclear track detectors based on LiF crystals were successfully applied for detection of proton induced tracks. Irradiations were performed with protons with energy ranging from 1 MeV up to about 56 MeV and for all proton energies the fluorescent tracks were observed. The tracks are not continuous, but consist of a series of bright spots. The gaps between spots tend to narrow with decreasing
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Estimating external exposure from different source geometries in soil contaminated by gamma-ray emitting radionuclides: A computational model combining Monte Carlo simulation and mathematical transformation Radiat. Meas. (IF 2.0) Pub Date : 2024-02-24 Boubaker Askri, Kaouther Bergaoui, Adel Trabelsi
A computational model is developed to estimate the external exposure to an arbitrary scenario describing the spatial distribution of the source in a contaminated soil by gamma-ray emitting radionuclides released after nuclear activities. This model welds together a Monte Carlo simulation approach and a mathematical transformation based on Tait–Bryan angles formalism. For Monte Carlo simulation, a source
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Molten Ba(OH)2.8H2O as an efficient and rapid etchant for detecting α-particles using a diallyl maleate-allyl diglycol carbonate detector Radiat. Meas. (IF 2.0) Pub Date : 2024-02-22 Arshad Khan, Tayseer I. Al-Naggar, Suha Al Qahtani, Soheir E. Mohamed, Hasan B. Albargi, Mohsen Alhamami, Ayman M. Abdalla
In the present study, for the first time, nuclear tracks of α-particles were created on diallyl maleate-allyl diglycol carbonate (DAM-ADC) using molten hydrated barium hydroxide (MBH). We used 17 DAM-ADC plates with dimensions of 1.0 cm × 1.0 cm × 0.1 cm. The bulk etching rate was calculated at various etching temperatures based on changes in the thickness of the DAM-ADC plates. DAM-ADC was irradiated
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Excited state lifetime of electron trapping centres in alkali feldspars Radiat. Meas. (IF 2.0) Pub Date : 2024-02-21 Svenja Riedesel, Mayank Jain
The development of the infrared photoluminescence (IRPL) signal enables the direct non-destructive probing of the trapped electron population in feldspars. Whilst IRPL offers new perspectives for luminescence dating, it also enables detailed, site-selective measurements of the dosimetric defects emitting IRPL at 880 nm (IRPL) and 955 nm (IRPL), allowing improved understanding of luminescence phenomena
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Self-adaptive pulse shape identification by using Gaussian mixture model Radiat. Meas. (IF 2.0) Pub Date : 2024-02-09 Zhiqiang Cheng, Qingxian Zhang, Heyi Tan, Chunhui Dong, Xin Hou, Jian Zhang, Xiaozhe Li, Hongfei Xiao
Identifying the pulse shape is a crucial step in detecting the contamination of surfaces by α/β radioactive isotopes. In this study, the authors propose a self-adaptive method to identify the pulse shape by applying the Gaussian mixture model and the constant-fraction timing algorithm to a ZnS(Ag) and plastic scintillator to improve its accuracy of detection of low-energy particles, and realize automatic
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Monte Carlo simulation for assessment of occupational doses in pediatric cardiology procedures Radiat. Meas. (IF 2.0) Pub Date : 2024-02-02 Carla J. Santos, William S. Santos, Lucio P. Neves, Diego C. Galeano, Ana P. Perini
In this study, we evaluated the occupational doses during a pediatric cardiac interventional radiology procedure using Monte Carlo simulations. For this purpose, we employed virtual anthropomorphic phantoms, with 1-, 5- and 10-year-old, as well as two adult phantoms to represent the medical staff. Each scenario was composed of two phantoms, the physician and the patient, coupled with the MCNPX 2.7
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Real-time neutron beam monitor utilizing scintillator technology for boron neutron capture therapy Radiat. Meas. (IF 2.0) Pub Date : 2024-02-02 Sang June Jeon, Jaewon Choi, Kyu Young Lee, Jungyu Yi
In boron neutron capture therapy (BNCT), patient dose is contingent upon boron concentration and neutron irradiation. This study details the creation and implementation of a real-time beam-monitoring system using a Eu:LiCaAlF (LiCAF) scintillation detector. This system precisely regulates neutron irradiation according to the treatment plan. A two-step calibration process was employed for enhanced reliability
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Improvement and verification of new measurement methods for radon and thoron progeny activity concentration based on alpha spectrometry analysis Radiat. Meas. (IF 2.0) Pub Date : 2024-02-01 Kang Peng, Hao Wang, Jinmin Yang, Lei Zhang, Qiuju Guo
For accurate dose evaluation of radon and thoron exposure, it is important to find a more effective method to measure radon and thoron progeny activity concentration in field measurements. For the purpose of improving measurement sensitivity, two new alpha spectrometry methods, the Wicke-Tn and PKU-Tn methods, for radon as well as thoron progeny were proposed and a series of verification experiments
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Fragmentation of the positron-emitting nucleus 11C on a carbon target at 248 MeV/nucleon Radiat. Meas. (IF 2.0) Pub Date : 2024-01-26 S.Y. Jin, Z.Q. Chen, S.T. Wang, Z.Y. Sun, Y.Z. Sun, X.H. Zhang, S.W. Tang, Y.H. Yu, D. Yan, F. Fang, Y.J. Zhang, S.B. Ma, X.B. Wei, T.Q. Liu, Y.F. Xu, Z.Y. Li, X. Jiang
Radioactive ions with positron-emitting such as 11C have been proposed to be used in heavy ion therapy due to their advantageous characteristics in verifying the ion range. However, the interaction between the incident beam and the patient’s body can induce the attenuation of the beam and the generation of the fragmentation products. The study of the impact of these processes suffers from the limited
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Long-term field studies of a distributed network of sensors for environmental radiological monitoring Radiat. Meas. (IF 2.0) Pub Date : 2024-01-23 N. Heracleous, K. Bauer, L. Gallego Manzano, F. Murtas, M. Silari, L. Svihrova
The W-MON project goal is to establish an automatic control mechanism of the presence of radioactive material in conventional waste containers at CERN using a distributed network of interconnected low-power radiation sensors. This network facilitates continuous data recording, transfer and storage in a database while allowing online and offline data analysis, in addition to alarm triggering. Data transmission
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Development of contamination detection system combined with various remote devices Radiat. Meas. (IF 2.0) Pub Date : 2024-01-19 Yuki Morishita, Hiroko Miyamura, Yuki Sato, Masatoshi Oura
The detection of alpha and beta contamination locations is important for decontaminating nuclear facilities. In the high radiation dose rate environment at the decommissioning sites, the contamination measurement by the workers is not effective. Thus, we developed a remote automatic contamination measurement system using a new scintillator-based detector. A 50 mmφ × 100-μm-thick YAlO3(Ce)(YAP:Ce) scintillator
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Lifetime extension of optically stimulated luminescent dosimeters above 10 gy Radiat. Meas. (IF 2.0) Pub Date : 2024-01-18 Hayden Scott, Paola Alvarez, Rebecca Howell, Adam Riegel, Ryan Sun, Stephen Kry
Background Optically stimulated luminescent dosimeters (OSLDs) are used in clinical radiation dosimetry, but their sensitivity changes with the accumulated dose, limiting their reusability. Different studies have reported inconsistent results regarding the changes in sensitivity at different accumulated doses, and the reasons for this inconsistency remain unclear. In addition, the extent to which the
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Performance of styrene polymerized plastic scintillator with micropixel avalanche photodiode Radiat. Meas. (IF 2.0) Pub Date : 2024-01-17 A. Sadigov, F. Ahmadov, G. Ahmadov, E. Aksu, D. Berikov, S. Nuruyev, R. Akbarov, M. Holik, F. Mamedov, J. Nagiyev, S. Gürbüz Güner, A. Mammadli, N. Suleymanova, C. Abbasova, S. Melikova, E. Yilmaz, O. Tagiyev, S. Lyubchyk, Z. Sadygov
This paper presents the performance of polystrene based plastic scintillator produced in Turkish Energy, Nuclear and Mineral Research Agency (TENMAK). The scintillator is manufactured using thermal polymerization of commercially available styrene monomer doped with first and second fluorescent dyes. The absorption spectrum of the scintillator exhibited two absorption bands at 225 nm and 340 nm, with
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An overview of, and prospects for, new luminescent detectors Radiat. Meas. (IF 2.0) Pub Date : 2024-01-14 Stephen W.S. McKeever
It has been realized since the early development of the first commercial TL dosimeter, LiF:Mg,Ti, that impurities (dopants) play a crucial role in the luminescence process. Initial attempts to describe the mechanisms of TL production were based on the concepts of “point” defects and the interchange of delocalized electronic charge between these defects, which acted either as trapping centers or recombination
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Design and validation of a single cylindrical neutron spectrometer using a gold activation foil Radiat. Meas. (IF 2.0) Pub Date : 2024-01-06 Rasito Tursinah, Sidik Permana, Zaki Su'ud, Alan Maulana, Putu Sukmabuana
A single cylindrical neutron spectrometer (SCNS) with a gold activation foil was designed for mono-directional high-flux neutron spectrum measurement applications. A total of seven gold activation foils with a diameter of 11 mm and a thickness of 0.2 mm were placed in the moderator as detectors with a depth variation of 15 mm. The moderator was cylindrical with a diameter of 8 cm and a length of 16 cm
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Radiophotoluminescence properties of Ag2O–Cs2O–BaO–Al2O3–P2O5 glasses Radiat. Meas. (IF 2.0) Pub Date : 2023-12-20 Akihiro Nishikawa, Daiki Shiratori, Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
In this study, we synthesized Ag2O–Cs2O–BaO–Al2O3–P2O5 glasses with different Ag concentrations (0.1, 0.3, 1.0, and 3.0%) using the melt-quenching method and investigated the optical properties and the spatial resolution as an imaging plate. These glasses showed luminescence at around 340 nm upon 230 nm excitation before X-ray irradiation and luminescence at around 620 nm upon 340 nm excitation after
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Alpha particle spectrometry in fluorescent nuclear track detectors with an automatic 3D track reanalysis algorithm Radiat. Meas. (IF 2.0) Pub Date : 2023-12-19 Jun Hu, Tamon Kusumoto, Miroslaw Janik, Satoshi Kodaira
The main obstacle to applying aluminum oxide doped with carbon and magnesium (Al2O3:C,Mg)-based fluorescent nuclear track detectors (FNTDs) in radionuclide therapy with alpha emitters is that it has not been known how to achieve an accurate and in situ dose assessment for in vitro cellular experiments. In this study, we developed an automatic 3D track reanalysis algorithm (ATRA) to analyze the alpha
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Drone-borne dosimetry in a radiological or nuclear scenario Radiat. Meas. (IF 2.0) Pub Date : 2023-12-12 Stef Geelen, Johan Camps, Geert Olyslaegers, Wouter Schroeyers
This paper describes the drone-borne dosimetry performed in two separate case studies. Two drone measurements were performed using a reference dose-rate detector measuring the ambient dose equivalent rate. A first flight was used to obtain reference measurements using a cesium-137 point source and flying at multiple speeds and different heights. A second flight was performed above the D1 radium storage
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Correlation between thermoluminescence and optically stimulated luminescence signal in BeO Radiat. Meas. (IF 2.0) Pub Date : 2023-12-15 Elif Kara, Clemens Woda
Beryllium Oxide (BeO) is a promising dosimetric material that is rapidly becoming an essential instrument in Optically Stimulated Luminescence (OSL) dosimetry applications. Despite the potential of BeO as a luminescence dosimeter, gaps remain in understanding how its Thermoluminescence (TL) and Optically Stimulated Luminescence (OSL) signals are connected. Our study aimed at examining Residual Thermoluminescence
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Neutron source strength verification via reaction rate measurement and Monte Carlo simulation Radiat. Meas. (IF 2.0) Pub Date : 2023-12-14 Alvie Asuncion-Astronomo, Charlotte V. Balderas, Jeffrey D. Tare, Cheri Anne M. Dingle
Determining the neutron source strength is essential to ensure optimal use of the source and to implement adequate radiation protection measures. In this study, the source strength of two (α,n) neutron sources – a newly acquired 185 GBq 241AmBe and a legacy source 74 GBq 239PuBe – were verified. Source strength verification was performed by measuring the induced activities in irradiated 115In foils
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Investigation of polarization mechanism in MSM TlBr crystal room-temperature nuclear radiation detector Radiat. Meas. (IF 2.0) Pub Date : 2023-12-09 Mingzhi Zhang, Guotu Xia, Chentao Huang, Juan Liu, Fang Tian, Wenjuan Deng, Jijun Zou, Bin Tang
Thallium Bromide (TlBr) single crystal detector is widely recognized as an excellent semiconductor nuclear radiation detector. And its detection performance has already reached commercial level of the majority semiconductor detector. However, the long-term stability of TlBr detector always exhibited a serious polarization effect and the commercial application of TlBr detector is heavily limited. In
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The sensitisation of quartz extracted from andesite Radiat. Meas. (IF 2.0) Pub Date : 2023-12-09 N. Karimi Moayed, M. Fattahi, M. Autzen, E. Haghshenas, V. Tajik, Z. Shoaie, M. Bailey, R. Sohbati, A.S. Murray
Low quartz sensitivities have been reported in several studies in Iran, and in part this is presumed to be a result of the volcanic provenance of many of the sediments in the study areas. In this study we test experimentally whether a quartz sample, extracted from an andesitic rock and showing an insensitive fast component in the Optically Stimulated Luminescence (OSL) signal, can be sensitised using
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The influence of Monte Carlo radiation transport codes and hadron physics models on stray neutron dose estimations in proton therapy: An extended intercomparison Radiat. Meas. (IF 2.0) Pub Date : 2023-12-12 Dries Colson, Sita Pinasti, Andrea Nicole Matamoros Ortega, Marijke De Saint-Hubert, Olivier Van Hoey, Brigitte Reniers
Purpose Selecting a Monte Carlo (MC) radiation transport code and nuclear physics model affects the simulation of secondary neutron fluence energy spectra and the estimation of the neutron dose equivalent in proton therapy. This study compares the MC codes FLUKA, MCNPX and GEANT4 from previous work with two additional MC codes, TOPAS (with either the Binary Intra-nuclear Cascade (BIC) or the Bertini
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Influence of eye lens dosimeter positioning in a realistic dosimetric phantom in reference radiation beams Radiat. Meas. (IF 2.0) Pub Date : 2023-12-06 Wlademir Carvalho Vasconcelos Filho, Gabriela Tereza Pinheiro Melo, Max Well Caetano de Araújo, Viviane Khoury Asfora, Helen Jamil Khoury, V.S.M. Barros
This paper presents a novel approach to dosimeter placement evaluation for personal eye lens dosimetry. A new assembly, known as the “Eye-Band”, and an anthropomorphic phantom containing two “Real Eye Dosimeters”, referred to as REDs, are proposed. The purpose of this study is to compare the energy and angular responses of the Eye-Band dosimeter assembly with those of an anthropomorphic dosimeter holder