Precision measurement of X-ray line spectra by energy dispersion in a gas microstrip detector

被引:3
作者
Bateman, JE [1 ]
机构
[1] Rutherford Appleton Lab, CLRC, Instrumentat Div, Didcot OX11 0QX, Oxon, England
关键词
gas microstrip detector; energy dispersive x-ray spectroscopy; data analysis;
D O I
10.1016/S0168-9002(02)00565-X
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
It is shown that when a gas microstrip detector (GMSD) is operated in such a way as to gain freedom from detector wall effects, the response of the detector to an X-ray line is stable and can be fitted reliably with a lognormal (LN) distribution function. The LN function permits the fitting of adjacent, overlapping X-ray lines with an accuracy in position of a few eV with an attendant penalty in the statistics required for a given precision in the amplitude measurement. Experimental data and Monte Carlo simulation data are presented to indicate the possible range of usefulness of this technique for energy-dependent X-ray line spectroscopy in applications (such as X-ray fluorescence analysis). The usefulness of the LN fits for detector studies is also noted. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:610 / 622
页数:13
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