Application of positron beam Doppler broadening technique to radiation effects in ion-irradiated Fe-Cu alloys

被引：6
|
作者：
Iwai, T [1 ]
Ito, Y [1 ]
机构：
[1] Univ Tokyo, Res Ctr Nucl Sci & Technol, Tokai, Ibaraki 3191188, Japan
来源：
POSITRON ANNIHILATION, ICPA-13, PROCEEDINGS | 2004年 / 445-6卷
关键词：
ion irradiation; positron beam Doppler broadening technique; nuclear reactor pressure vessel steels; radiation embrittlement;
D O I：
10.4028/www.scientific.net/MSF.445-446.120
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to investigate the behavior of copper impurity in radiation embrittlement of LWR pressure vessel steels, positron beam Doppler broadening technique was applied to Fe-Cu irradiated by Fe ions. Positron beam Doppler broadening spectra clearly showed production of trapping sites for positrons in thermally-aged Fe-0.9Cu, and the sites are very likely to consist of copper atoms according to the contribution of annihilation with core electrons. In ion-irradiated specimens, copper atoms are likely to be enriched near nanoclusters.
引用
收藏
页码：120 / 122
页数：3
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