差分进化算法在X射线谱分析中的应用
On the Application of Differential Evolution to the Analysis of X-Ray Spectra
摘要：
利用差分演化（DE）方法，我们确定了2003年1月21日等离子体耀斑的日冕元素丰度和差分发射测量（DEM）分布。分析是基于RESIK X射线谱。DE属于进化算法家族。DE具有概念简单、易于实现等优点，已被广泛应用于解决科学和工程中的许多问题。在这项研究中，我们应用这种方法在一个新的背景下：同时测定血浆成分和DEM。为了增加使用DE获得的结果的置信度，我们通过比较DE合成光谱与RESIK观察到的相应光谱来测试其算法的使用。广泛的讨论的DE方法使用和获得的物理特性的耀斑等离子体。
英文摘要：
Using methods of differential evolution (DE,) we determined the coronal elemental abundances and the differential emission measure (DEM) distributions for the plasma flaring on 2003 January 21. The analyses have been based on RESIK X-ray spectra. DE belongs to the family of evolutionary algorithms. DE is conceptually simple and easy to be implemented, so it has been applied to solve many problems in science and engineering. In this study we apply this method in a new context: simultaneous determination of plasma composition and DEM . In order to increase the confidence in the results obtained using DE, we tested the use of its algorithms by comparing the DE synthesized spectra with respective spectra observed by RESIK. Extensive discussion of the DE method used and the obtained physical characteristics of flaring plasma is presented.
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