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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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金属中高动量电子分布的实验研究
Keywords: 正电子湮没,符合技术,本底
Abstract:
测量了Al,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Ga等金属的正电子湮没辐射Doppler展宽谱。采用双探头符合技术，可大幅度地降低谱线的本底，并获得正电子与原子内层电子湮没对谱线的贡献。实验结果表明谱线的本底随样品与高纯Ge探头之间距离的增加而减小；Ni的商谱(以单晶Al为参考)的谱峰随谱线本底的降低而升高；元素周期表中第四周期的Ti,V,Cr,Mn,Fe,Co,Ni,Cu金属的商谱的谱峰随原子的3d电子数目的增多而升高。
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