A NEW LONG-LIVED COMPONENT IN THE POSITRON LIFETIME SPECTRUM IN KI AT LOW-TEMPERATURES

被引：4

作者：

SAITO, H

HYODO, T

机构：

[1] Institute of Physics, College of Arts and Sciences, University of Tokyo, Meguro-ku, Tokyo 153

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 01期

关键词：

POSITRON ANNIHILATION; POSITRONS IN ALKALI HALIDE; KI; POSITRONIUM; POSITRON LIFETIME; SELF-TRAPPING; POSITIVE ION VACANCIES; EXPERIMENT;

D O I：

10.1143/JPSJ.60.57

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Positron lifetime spectra in KI have been measured in the temperature range between 12 K and 295 K. Large changes of the spectrum due to the transition of the ortho-positronium from a free state to a self-trapped state have been observed. A new long-lived component has been found at low temperatures and attributed to the irradiation-induced positive ion vacancy.

引用

页码：57 / 60

页数：4

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