POSITRON SPUR STRUCTURE EMULATED BY VARIABLE-ENERGY SLOW POSITRON BEAM

被引：1

作者：

ITO, Y ^{[1
]}

ABE, H ^{[1
]}

TABATA, Y ^{[1
]}

机构：

[1] TOKAI UNIV,FAC ENGN,HIRATSUKA,KANAGAWA 25912,JAPAN

来源：

JOURNAL DE PHYSIQUE IV | 1993年 / 3卷 / C4期

关键词：

D O I：

10.1051/jp4:1993416

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Variable energy slow positron beam was used to probe the positronic spur processes in polymers: low density polyethylene and a polyimide (Kapton). A fraction of the injected positrons was re-emitted as positron or positronium, whose fraction was dependent on the energy of injected positrons. The energy of the re-emitted positrons could become quite large, even larger than the band-gap energies of the substance. This was considered to be the result of charge-up effect. This effect may provide a new concept for a ''field assisted slow positron moderator''.

引用

页码：131 / 133

页数：3