Establishment and study of a polarized X-ray radiation facility
作者机构：School of Physical Science and TechnologyGuangxi UniversityNanning 530004China National Institute of MetrologyBeijing 100029China
出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)
年 卷 期：2023年第34卷第8期
页 面：54-63页
核心收录：
学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学]
基 金：supported by the National Natural Science Foundation of China(No.12205289)
主 题：Polarized X-rays Polarimetry Calibration Bragg diffraction
摘 要：With the advancement in X-ray astronomical detection technology,various celestial polarization detection projects have been *** meet the calibration requirements of polarimeters on the ground,a polarized X-ray radiation facility was designed for this *** design was based on the principle that X-rays incident at 45°on a crystal produce polarized X-rays,and a second crystal was used to measure the polarization of the X-rays produced by the facility after *** effects of different diaphragm sizes on the degree of polarization were compared,and the facility produced X-rays with polarization degrees of up to 99.55±0.96%using LiF200 and LiF220 *** result revealed that the polarization of incident X-rays is one of the factors affecting the diffraction efficiency of *** replacement of different crystals can satisfy the calibration requirements of polarized X-ray detectors with more energy points in the energy range(4-10)*** the future,the facility should be placed in a vacuum environment to meet the calibration requirements at lower energies.
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