Accurate reconstruction of soft X-ray energy spectrum in detector response matrix  

作　　者：RunLong Gao Yang Liu XiaoPing Ouyang Jing Chen Xiao Ouyang 

机构地区：[1]School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China [2]State Key L aboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi'an 710024,China [3]College of Business Administration,Hunan University,Changsha 410082,China [4]Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2019年第12期41-47,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11875120,11505060,and 11435010);the Beijing Nova Program(Grant No.xx2018057);the Fund of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect(Grant No.SKLIPR1810);the Fundamental Research Funds for the Central Universities(Grant No.2018YQ01)

摘　　要：In this paper, we report the design of a Monte Carlo simulation for the energy spectrum measurement system based on the ladderabsorption 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 Xray 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.In this paper, we report the design of a Monte Carlo simulation for the energy spectrum measurement system based on the ladderabsorption 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 Xray 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.

关 键 词：X-RAY SPECTROMETERS applications of MONTE Carlo methods MATRIX THEORY 

分 类 号：O57[理学—粒子物理与原子核物理]