Development of a pulsing system with the linac based slow positron beam

被引：4
|
作者：
Tashiro, M [1 ]
Honda, Y [1 ]
Yamaguchi, T [1 ]
Pujari, PK [1 ]
Kimura, N [1 ]
Kozawa, T [1 ]
Tagawa, S [1 ]
机构：
[1] Osaka Univ, Inst Sci & Ind Res, Ibaraki, Osaka 5670047, Japan
来源：
POSITRON ANNIHILATION - ICPA-12 | 2001年 / 363-3卷
关键词：
lifetime; linac; pulse; slow positron beam; storage; stretching;
D O I：
10.4028/www.scientific.net/MSF.363-365.664
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A pulsing system of a slow positron beam has been developed to measure positron lifetime for thin films. The pulsing apparatus consists of positron storage section, chopper and bunching section. The storage section reduces the energy spread and makes a quasi-continuous beam. Positrons are bunched by suitable time-varying voltage which is produced by an arbitrary waveform generator and amplified. The time width of bunched positrons has reached similar to 550 ps (FWHM) with positron mean energy of similar to 100 eV at present.
引用
收藏
页码：664 / 666
页数：3
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