Sealed-off helium-filled proportional counter for the conversion electron Mössbauer spectroscopy
作者: Taizo KawauchiKanta AsakawaKatsuyuki Fukutani
作者单位: 1The University of Tokyo
刊名: Hyperfine Interactions, 2017, Vol.238 (1)
来源数据库: Springer Nature Journal
DOI: 10.1007/s10751-017-1451-5
关键词: Sealed-off proportional counterConversion electron Mössbauer spectroscopyHigh-temperature operation
英文摘要: Conversion electron Mössbauer spectroscopy (CEMS) is a surface-sensitive technique because of the shallowness of the escape depth of conversion electrons. The proportional counter with the sample built-in is usually used for CEMS with a flow of He mixed with a quenching gas. This flow-type proportional counter with a mixed gas, however, is not suited to high-temperature measurements. For high-temperature operation, we fabricated a sealed-off proportional counter operated above 850 K for CEMS, which is filled with pure He at a pressure of 1–8 × 104 Pa. The distribution of the output pulse voltage revealed an inflection point suggesting that two multiplication mechanisms are operative. The multiplication factor of the proportional counter was estimated to be about...
原始语种摘要: Conversion electron Mössbauer spectroscopy (CEMS) is a surface-sensitive technique because of the shallowness of the escape depth of conversion electrons. The proportional counter with the sample built-in is usually used for CEMS with a flow of He mixed with a quenching gas. This flow-type proportional counter with a mixed gas, however, is not suited to high-temperature measurements. For high-temperature operation, we fabricated a sealed-off proportional counter operated above 850 K for CEMS, which is filled with pure He at a pressure of 1–8 × 104 Pa. The distribution of the output pulse voltage revealed an inflection point suggesting that two multiplication mechanisms are operative. The multiplication factor of the proportional counter was estimated to be about...
全文获取路径: Springer Nature  (合作)
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关键词翻译
关键词翻译
  • proportional 成比例的
  • counter 计数器
  • electron 电子
  • transition 转移
  • multiplication 生殖
  • temperature 温度
  • fabricated 制造
  • technique 技术
  • CEMS Central Electronic Management System
  • spectroscopy 分光学