Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2010, Vol. 21 ›› Issue (5): 281-284 doi: 10.13538/j.1001-8042/nst.21.281-284

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The background calculation of the filter-fluorescer method

WANG Dong* YANG Gaozhao TANG Dengpan   

  1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900
WANG Dong, YANG Gaozhao, TANG Dengpan. The background calculation of the filter-fluorescer method.Nuclear Science and Techniques, 2010, 21(5): 281-284     doi: 10.13538/j.1001-8042/nst.21.281-284

Abstract:

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.

Key words: filter-fluorescer method, Background channel, Real background, Semiquantitative analysis