Accurate reconstruction of soft X-ray energy spectrum in detector response matrix
Science China Physics, Mechanics & Astronomy(2019)
摘要
In this paper, we report the design of a Monte Carlo simulation for the energy spectrum measurement system based on the ladder- absorption method. Herein, the detector response matrix can be calculated using the detector responses to several monochromatic X-ray beams. A novel soft X-ray spectrum unfolding method based on the two-step reverse iteration (TSRI) algorithm is applied to acquire the primary spectrum. This paper provides examples of the use of TSRI, and the unfolded energy spectra for the soft X-ray beams show excellent agreement with the references. The unfolded energy spectra obtained using the TSRI exhibit better accuracy than those obtained from the commonly used unfolding code GRAVEL.
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关键词
X-ray spectrometers, applications of Monte Carlo methods, matrix theory
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