The background calculation of the filter-fluorescer method

LOW ENERGY ACCELERATORS AND RADIATION APPLICATIONS

The background calculation of the filter-fluorescer method

WANG Dong，

YANG Gaozhao，

TANG Dengpan

Nuclear Science and Techniques

Vol.21, No.5

pp.281-284

Published in print 20 Oct 2010

DOI：10.13538/j.1001-8042/nst.21.281-284

31800

For the measurement of X-ray energy spectrum with filter-fluorescer method, the high energy tail at the rearward of response function is the main source of background. There are, traditionally, two techniques for measuring the background contributions: the same element Z for the fluorescer and filter, or the same element Z−1 for them. Using the formula of fluorescence intensity, and the elemental combinations of cobalt and iron, the backgrounds which the two techniques provide and the real one for measuring black-body radiation at equilibrium temperature of 7×10⁶ K, were calculated. The results show that the Co-Co combination for the filter-fluorescer spectrometer can achieve better effect. A semi-quantitative analysis for the calculation results is discussed.

filter-fluorescer methodBackground channelReal backgroundSemiquantitative analysis

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