Development and application of the Ghent pulsed positron beam

被引：10

作者：

De Baerdemaeker, J ^{[1
]}

Dauwe, C ^{[1
]}

机构：

[1] Univ Ghent, Div Nucl Mat Phys, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium

来源：

APPLIED SURFACE SCIENCE | 2002年 / 194卷 / 1-4期

关键词：

pulsed positron beam; positron lifetime spectroscopy; resolution function;

D O I：

10.1016/S0169-4332(02)00088-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present the development and application of a compact pulsed positron beam at the Ghent University. The pulsing system of this source-based hewn consists of a chopper-prebuncher and a resonator buncher both running at a repetition rate of 50 MHz(20 ns time window). A description of the timing components is given. The energy of the positrons can be adjusted between 0.5 and 30 keV by changing the potential of the sample. Finally, we propose a refined method to analyse lifetime spectra from pulsed positron beams using a resolution function with the shape of the time structure of the beam. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：52 / 55

页数：4

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