高能X射线光谱分析工具——SasalPy  

High energy X-ray spectroscopy tools-SasalPy

作　　者：郝明月 梁贵云[2] 王凯[1] 毛俊捷 HAO Ming-Yue;LIANG Gui-Yun;WANG Kai;MAO Jun-Jie(Hebei University,Baoding 07002,China;Key Laboratory of Optical Astronomy,National Astronomical Observatories CAS,Beijing 100101,China;Tsinghua University,Beijing 100084,China)

机构地区：[1]河北大学,保定071002 [2]中国科学院国家天文台,北京100101 [3]清华大学,北京100084

出　　处：《原子与分子物理学报》2024年第4期99-113,共15页Journal of Atomic and Molecular Physics

基　　金：中国科学院战略先导B专项(XDB34020205);国家自然科学基金天文联合项目(U1931140);计算物理重点实验室基金(6142A05210401)。

摘　　要：等离子体模型是天文学家解析高能天体观测数据的重要工具,发展精确便利的等离子体模型有助于研究者高效的进行高能X射线光谱分析工作.在现有的SASAL等离子体模型的基础上进一步提出一种新的基于Python语言的高能X射线光谱分析工具包SasalPy,并从理论框架、功能性和差异性方面阐述SasalPy的可靠性和精确性.线辐射和连续辐射计算结果表明,原子参数如跃迁速率、碰撞强度等会对合成光谱产生明显地影响.以Capella星冕的体微分发射度为基础开展了三个温度的光谱合成应用,并通过与其他等离子体模型辐射损失结果的对比,说明SasalPy在X射线能段比较精确可靠.The plasma model is an important tool for astronomers to analyze the observation data of high-energy celestial bodies.The development of accurate and convenient plasma models is helpful for researchers to carry out high-energy X-ray spectroscopic analysis work efficiently.Based on the existing plasma model SASAL,a new high-energy X-ray spectroscopy toolkit SasalPy based on the Python language is further developed.The reliability and accuracy of SasalPy are explained from the aspects of theoretical framework,functionality,and differences.Calculation results of line and continuum radiation show that atomic parameters such as transition rates and collision strengths will significantly impact the synthetic spectrum.Based on the volume differential emission measure of the Capella corona,the application of three-temperature spectral synthesis was carried out.The comparison with the radiation loss results of other plasma models showed that SasalPy is more accurate and reliable in the X-ray energy range.

关 键 词：等离子体模型 高能X射线 线辐射 连续辐射 合成光谱 辐射损失 

分 类 号：O539[理学—等离子体物理]