Transit detector for intermediate monitoring in time‐of‐flight mass analyzers
作者:
G. Drechsler,
C. Ba¨ssmann,
W.‐D. v. Fraunberg,
U. Boesl,
E. W. Schlag,
期刊:
Review of Scientific Instruments
(AIP Available online 1994)
卷期:
Volume 65,
issue 10
页码: 3172-3177
ISSN:0034-6748
年代: 1994
DOI:10.1063/1.1144546
出版商: AIP
数据来源: AIP
摘要:
We present a particle detector for intermediate monitoring of beams of ion bunches (e.g., in time‐of‐flight mass analyzers). Its principle is secondary electron emission from a thin wire whose cross section is small (i.e., <5%) compared with the cross section of the primary ion beam. By means of a special experimental setup, anionic, cationic, or neutral particle beams can be formed; in addition, a tandem arrangement of our transit detector and a second detector at the end of the ion flight region allows us to test this transit detector. The influence on mass resolution, reliability of ion peak heights, dependence on kinetic energy and charge of the primary particles, and linearity have been investigated. This new detector may be useful for tandem mass spectrometric experiments, e.g., in time‐of‐flight analyzers with secondary excitation by collisions or photon absorption.
点击下载:
PDF
(787KB)
返 回