Application of Positron Beam Doppler Broadening Technique to Radiation Effects in Ion-Irradiated Fe-Cu Alloys
Application of Positron Beam Doppler Broadening Technique to Radiation Effects in Ion-Irradiated Fe-Cu Alloys
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DOI：
10.4028/www.scientific.net/msf.445-446.120
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发表时间：
2004-01
期刊：
影响因子：
--
通讯作者：
T. Iwai;Y. Ito
中科院分区：
文献类型：
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作者：
T. Iwai;Y. Ito
为了研究铜杂质在轻水堆压力容器钢辐射脆化中的行为，采用正电子束多普勒展宽技术研究了Fe离子辐照Fe-Cu合金的辐射脆化行为。正电子束多普勒展宽谱清楚地显示了热时效Fe-0.9Cu中正电子俘获位置的产生，根据与芯电子湮灭的贡献，这些位置很可能由铜原子组成。在离子辐照的样品中，铜原子可能富集在纳米团簇附近。
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.