High-performance x-ray detector for appearance potential spectroscopy

被引：10
|
作者：
Rangelov, G
Ertl, K
Passek, F
Vonbank, M
Bassen, S
Reinmuth, J
Donath, M
Dose, V
机构：
[1] Univ Bayreuth, D-95440 Bayreuth, Germany
[2] Max Planck Inst Plasmaphys, D-85740 Garching, Germany
来源：
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS | 1998年 / 16卷 / 04期
关键词：
D O I：
10.1116/1.581416
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A high-performance detector for soft x-ray appearance potential spectroscopy is described. It basically consists of an alkali halide photon-to-electron converting layer evaporated onto a self-supporting amorphous carbon foil. This combination absorbs the low energy photons thereby increasing the signal-to-noise ratio. Further improvement of the signal-to-noise ratio is achieved by an additional x-ray filter. The choice of filter and converter material depends on the characteristic radiation of interest. The electrons emitted from the converter are detected by means of a microchannel plate. With this detector a signal-to-noise ratio of 150 was obtained at the diamond appearance potential spectroscopic peak for 5 mC charge per point. (C) 1998 American Vacuum Society. [S0734-2101(98)02404-X].
引用
收藏
页码：2738 / 2741
页数：4
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