量化辐射损伤钚的共振光辐射

J. G. Tobin, S.-W. Yu, B. W. Chung
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引用次数: 0

摘要

通过使用小的氧杂质峰作为对传统交叉光子能量归一化的独立定量检查,对新的和δ-Pu(Ga)老化的共振光电子能谱(ResPes)进行了重新评估。测得的氧强度与原子横截面计算结果一致。与之前的分析一致,老化样品中的辐射损伤会压缩和锐化 5f 峰。这与 5f 带的局部化增加有关,与 5f 态密度计算显示的 5f 带宽随着簇尺寸减小而变窄相对应。
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Quantifying the resonant photoemission of radiation damaged Pu
The resonant photoelectron spectroscopy (ResPes) of new and aged δ-Pu(Ga) is reassessed by using the small oxygen contaminant peaks as an independent and quantitative check upon conventional cross-photon-energy normalization. Good agreement is found between the measured oxygen intensities and the atomic cross section calculations. Consistent with earlier analyses, the radiation induced damage in the aged samples is found to compress and sharpen the 5f peaks. This is associated with increased localization of the 5f bands, corresponding to the 5f density of states calculations that show a narrowing of 5f bandwidth with cluster size diminishment.
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