利用TALYS计算太阳耀斑伽玛射线

摘要

Solar gamma-ray lines, produced from nuclear reactions of accelerated particles interacting with solar atmosphere ambient medium, are the most direct diagnosis about the acceleration and transport of electrons and ions in solar flares. Analysis of gamma-ray line spectrum in solar flare has provided information about composition, spectrum and angular distribution of the accelerated ions, as well as elemental abundance of the ambient solar atmosphere. A new gamma-ray calculation program was developed by using an efficient nuclear code TALYS. The theory of gamma-ray production in solar flares is treated in detail. In addition, the characteristics of gamma-ray spectrum are also presented.%太阳耀斑伽玛射线能谱是加速粒子与太阳大气介质原子碰撞的结果,它是研究太阳耀斑中加速粒子和高能电子最为直接的手段.通过分析伽玛射线能谱,可以获得耀斑过程中加速粒子的成分、能谱、角分布及太阳大气元素丰度等重要信息.TALYS程序是一套模拟核反应的软件,对核反应过程中的所有信息均能完整地描述.利用TALYS计算得到了完整的太阳耀斑伽玛射线的核反应截面数据,开发了一套新的耀斑伽玛射线谱计算程序.详细介绍了耀斑伽玛射线计算的理论模型,并简单探讨了耀斑伽玛射线的特性,为未来的耀斑伽玛射线能谱分析奠定了理论基础.