SLOW POSITRON PULSING SYSTEM FOR VARIABLE ENERGY POSITRON LIFETIME SPECTROSCOPY

被引：149

作者：

SUZUKI, R ^{[1
]}

KOBAYASHI, Y ^{[1
]}

MIKADO, T ^{[1
]}

OHGAKI, H ^{[1
]}

CHIWAKI, M ^{[1
]}

YAMAZAKI, T ^{[1
]}

TOMIMASU, T ^{[1
]}

机构：

[1] NATL CHEM LAB IND,TSUKUBA,IBARAKI 305,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 3B期

关键词：

POSITRON ANNIHILATION; POSITRON LIFETIME SPECTROSCOPY; DOPPLER BROADENING SPECTROSCOPY; INTENSE SLOW POSITRON BEAM; VARIABLE ENERGY POSITRONS; CHOPPER; BUNCHER; PULSING SYSTEM; MEASUREMENT;

D O I：

10.1143/JJAP.30.L532

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A positron pulsing system has been constructed for variable energy positron lifetime spectroscopy. The system consists of a reflection type chopper, a sub-harmonic prebuncher, and a double harmonic buncher. By operating the system with an intense slow positron beam generated by an electron linac, positron lifetime spectra have been successfully measured in an extended time range of more than 45 ns with a good time resolution (250 ps). Furthermore, Doppler broadening profiles of annihilation radiations can be obtained simultaneously with the lifetime measurements.

引用

页码：L532 / L534

页数：3

共 11 条

[1] STRETCHING OF SLOW POSITRON PULSES GENERATED WITH AN ELECTRON LINAC [J].