検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Isotope effects in thermal neutron transmission and backscattering processes for $$varepsilon$$-phase zirconium hydrides and deuterides

$$varepsilon$$相のジルコニウム水素化物及び重水素化物に対する中性子透過と後方散乱における同位体効果

土屋 文*; 安田 良; 勅使河原 誠; 小無 健司*; 永田 晋二*; 四竈 樹男*; 山脇 道夫*

Tsuchiya, Bun*; Yasuda, Ryo; Teshigawara, Makoto; Konashi, Kenji*; Nagata, Shinji*; Shikama, Tatsuo*; Yamawaki, Michio*

ジルコニウム水素化物($$varepsilon$$-ZrHx)及び重水素化物($$varepsilon$$-ZrDx)における水素同位体濃度分布を中性子ラジオグラフィ(NRG)で調べた。熱中性子の透過と後方散乱、それぞれのNRG画像を取得し、水素濃度依存性と同位体による効果を明らかにした。これらの結果は、熱中性子質量源弱係数の同位体効果が、$$varepsilon$$-ZrHxの場合、$$varepsilon$$-ZrDxに比べて6-9倍あることを示している。中性子透過と後方散乱にNRG画像は、Monte Carlo neutron-particle transport (MCNP)により解析された。

Distributions of hydrogen isotope concentrations in e-phase zirconium hydrides and deuterides ($$varepsilon$$-ZrHx and $$varepsilon$$-ZrDx: 1.8 $$<$$ x $$<$$ 2.0) were investigated by neutron radiography (NRG). The NRG images of the thermal neutron transmission and backscattering revealed hydrogen concentration dependence and isotope differences. The thermal neutron mass attenuation coefficients in relation to the hydrogen isotope concentrations were determined from the transmission NRG images. The results showed the isotope effects of the thermal neutron mass attenuation coefficients for $$varepsilon$$-ZrHx to be about 6-9 times higher than those for $$varepsilon$$-ZrDx. The neutron scattering processes for transmission and backscattering NRG images of $$varepsilon$$-ZrHx and $$varepsilon$$-ZrDx were also analyzed using a general Monte Carlo neutron-particle transport (MCNP) code.

Access

:

- Accesses

InCites™

:

パーセンタイル:80.09

分野:Materials Science, Multidisciplinary

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.