AN IMPROVED PULSED LOW-ENERGY POSITRON SYSTEM

被引：62
作者：
WILLUTZKI, P
STORMER, J
KOGEL, G
SPERR, P
BRITTON, DT
STEINDL, R
TRIFTSHAUSER, W
机构：
[1] Universität der Bundeswehr München, Institut für Nukleare Festkörperphysik, Neubiberg
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 1994年 / 5卷 / 05期
关键词：
D O I：
10.1088/0957-0233/5/5/013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A pulsed low-energy positron system for positron-lifetime spectroscopy has been up-graded and modified with regard to its three main components. A new moderator preparation chamber has been added, the radiofrequency pulsing concept has been modified using a pre-buncher and a pre-chopper in front of the existing chopper-buncher section. Furthermore, a new target station allowing measurements at variable temperatures has been incorporated. The lifetime spectra now reveal a strongly increased ratio of peak to background and of peak to satellite peak.
引用
收藏
页码：548 / 554
页数：7
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