POSITRON LIFETIME IN C60/C70 POWDER

被引：24

作者：

AZUMA, T ^{[1
]}

SAITO, H ^{[1
]}

YAMAZAKI, Y ^{[1
]}

KOMAKI, K ^{[1
]}

NAGASHIMA, Y ^{[1
]}

WATANABE, H ^{[1
]}

HYODO, T ^{[1
]}

KATAURA, H ^{[1
]}

KOBAYASHI, N ^{[1
]}

机构：

[1] TOKYO METROPOLITAN UNIV,FAC SCI,DEPT PHYS,HACHIOJI,TOKYO 19203,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 09期

关键词：

C60; GRAPHITE; POSITRON ANNIHILATION; POSITRONIUM;

D O I：

10.1143/JPSJ.60.2812

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Positron lifetime spectra have been measured in C60/C70 and graphite powders at room temperature. It has been found that the spectrum for C60/C70 has only one component of lifetime 393 ps, whereas that for graphite has three components of lifetimes 237 ps, 455 ps, and 88 ns. The single component in C60/C70 does not originate from positronium. Considering its lifetime, the positron's ground state in C60/C70 is supposed to be localized in the periodic free space of the C60/C70 crystal structure.

引用

页码：2812 / 2814

页数：3

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