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.

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页码：548 / 554

页数：7

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