Positron trapping cross section and trapping efficiency in plastically deformed magnesium

被引：14

作者：

Abdelrahman, M

Badawi, E

机构：

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1996年 / 35卷 / 9A期

关键词：

positron annihilation lifetime; trapping efficiency; trapping cross section; Burger's vector; dislocation density;

D O I：

10.1143/JJAP.35.4728

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurement of positron annihilation lifetime in a pairs of deformed magnesium specimens with deformations of up to 75% are discussed. The lifetime <(tau)over bar> exhibits saturation: for deformations larger than those corresponding to a 15% thickness reduction. The lifetime varies from 231+/-2 ps for annealed magnesium to 249+/-2 for dislocation-saturated samples. The trapping cross section and trapping efficiency are calculated.

引用

页码：4728 / 4729

页数：2

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