摘要
简要介绍了广泛应用于表面科学的灵敏核探针——慢正电子束设备的原理、构造和应用 ,阐述了北京慢正电子束流装置的设计原理和性能 ,讨论了北京慢正电子束流装置今后的研究前景 .
A novel and compact slow positron beam line——Beijing Slow Positron Beam Line was described. The basic physical concepts of the slow positron beam and its applications were reviewed. Recent experimental results showed the converting effcicency for the total positrons from the radioisotope to slow positrons was 8×10 -5 and the moderation efficiency was 1.7×10 -4 . The future development of Beijing Intense Slow Positron Beam, based on the BEPC LINAC, was also briefly discussed.
出处
《原子核物理评论》
CAS
CSCD
2000年第2期117-120,共4页
Nuclear Physics Review
基金
中国科学院九五重点项目资助!( KJ95 2 -s1-4 16)&&
关键词
慢正电子束流
正电子湮没
加速器
slow positron beam line
positron annihilation technique
efficiency