Advancing instrumentation to explore dissociative electron attachment (DEA) studies allows previously unattainable information to be acquired. Using a newly constructed velocity map imaging spectrometer, we revisited a study on DEA to gas-phase acetic acid. We discuss possible fragmentation channels and compared the corresponding ion yields with previous high electron-energy resolution results. We focus on the channels occurring at higher energies, particularly near 10 eV, and calculate their thermodynamic thresholds. Moreover, we expand previous studies and perform time-sliced imaging near the 10 eV resonance to obtain the kinetic energy distribution of the fragment ions.

中文翻译：

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使用速度图成像技术对气相乙酸进行离解电子附着研究

推进仪器探索解离电子附着（DEA）研究可以获取以前无法获得的信息。使用新构建的速度图成像光谱仪，我们重新审视了 DEA 对气相乙酸的研究。我们讨论了可能的碎片通道，并将相应的离子产率与之前的高电子能量分辨率结果进行了比较。我们关注在较高能量（特别是接近 10 eV）下发生的通道，并计算它们的热力学阈值。此外，我们扩展了之前的研究，在 10 eV 共振附近进行时间切片成像，以获得碎片离子的动能分布。