Elemental analysis of positron affinitive site in materials by coincidence Doppler broadening spectroscopy
Elemental analysis of positron affinitive site in materials by coincidence Doppler broadening spectroscopy
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DOI：
10.1016/s0969-806x(03)00188-9
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发表时间：
2003-10-01
影响因子：
2.9
通讯作者：
Hasegawa, M
中科院分区：
文献类型：
--
作者：
Nagai, Y;Tang, Z;Hasegawa, M
元素分析采用重合多普勒展宽方法研究材料中的正电子亲和纳米结构：（1）嵌入Fe中的无缺陷Cu纳米团簇，（2）Fe中被Cu原子覆盖的纳米空隙，以及（3）铝合金（Al-Ag和Al-Zn）中的溶质团簇（GP区）。通过利用正电子捕获，不仅可以捕获空位型缺陷，还可以捕获嵌入材料中的正电子亲和性、无缺陷的纳米团簇，可以获得捕获位点的独特且专有的信息，例如缺陷结构、相干性、化学成分等。 (C) 2003 爱思唯尔科学有限公司。
Elemental analysis Study of the positron affinitive nano-structures in materials by coincidence Doppler broadening method are presented: (1) defect free Cu nano-clusters embedded in Fe, (2) nano-voids in Fe covered with Cu atoms, and (3) solute clusters (GP zones) in Al alloys (Al-Ag and Al-Zn). By utilizing positron trapping not only in vacancy-type defects but also positron affinitive, defect-free nano-clusters embedded in materials, unique and exclusive information, such as defect structure, coherency, chemical composition, and so on, on the trapping sites can be obtained. (C) 2003 Elsevier Science Ltd.