Change in the Positron Annihilation Lifetime of Vacancy Clusters Containing Hydrogen Atoms in Electron-Irradiated F82H
Change in the Positron Annihilation Lifetime of Vacancy Clusters Containing Hydrogen Atoms in Electron-Irradiated F82H
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DOI：
10.4028/www.scientific.net/msf.1024.71
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发表时间：
2021-03
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通讯作者：
Koichi Sato;Yohei Kondo;M. Ohta;Qiu Xu;A. Yabuuchi;A. Kinomura;Masahira Onoue;T. Onitsuka;M. Hatakeyama;H. Iwakiri;D. Kato;Yoshiyuki Watanabe;H. Tanigawa
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文献类型：
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作者：
Koichi Sato;Yohei Kondo;M. Ohta;Qiu Xu;A. Yabuuchi;A. Kinomura;Masahira Onoue;T. Onitsuka;M. Hatakeyama;H. Iwakiri;D. Kato;Yoshiyuki Watanabe;H. Tanigawa
用正电子湮没寿命（PAL）测量方法，测定了电子辐照F_（82）H中空位团簇电解充氢前后PAL的变化。实验变化表明，8个氢原子被困在空位簇中，而理论计算结果约为14个原子。由于样品在室温下放置5分钟直到开始PAL测量，因此还考虑了氢原子的去捕获效应;在每个空位簇中捕获了大约13个氢原子。在148 K退火后，PAL下降，这不能从理论上解释。因此，需要进一步的实验和讨论，以获得在F82 H中含氢原子的空位团簇的PAL的精确变化。
The change in the positron annihilation lifetime (PAL) of vacancy clusters before and after electrolysis hydrogen charging was determined using PAL measurements in electron-irradiated F82H. The experimental change indicated 8 hydrogen atoms were trapped in vacancy clusters; whereas the theoretical calculation resulted in approximately 14 atoms. As the samples were left at room temperature for 5 min until the start of the PAL measurements, the de-trapping effect of hydrogen atoms was also considered; approximately 13 hydrogen atoms were captured at each vacancy cluster. The PAL decreased after annealing at 148 K, which could not be explained theoretically. Therefore, further experiments and discussions are needed to obtain a precise change in the PAL of vacancy clusters containing hydrogen atoms in F82H.