EXPERIMENTAL-STUDY OF POSITRON MOTION IN KAPTON

被引：23

作者：

BRUSA, RS ^{[1
]}

DUPASQUIER, A ^{[1
]}

GALVANETTO, E ^{[1
]}

ZECCA, A ^{[1
]}

机构：

[1] UNIV CAGLIARI,DIPARTIMENTO SCI FIS,I-09100 CAGLIARI,ITALY

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1992年 / 54卷 / 03期

关键词：

D O I：

10.1007/BF00323842

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The drift of positrons under the action of an electric field in Kapton has been observed by using a variable-energy positron beam and the Doppler broadening technique. Even if the maximum applied field (2 MV/cm) is so high that the electrostatic work for a displacement of less than 0.15 nm is larger than the thermal energy, the experimental data can be fit by the diffusion model with a field-independent mobility. The best-fit value of the mobility (ca. 1 x 10(-3) cm2 V-1 s-1) is extremely low in comparison with other dielectrics. The results are discussed with regards to the interaction of positrons with the molecular field.

引用

页码：233 / 238

页数：6