项目名称: 太阳等离子体的光谱特性研究
项目编号: No.11205047
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 物理学II
项目作者: 贺健
作者单位: 河南科技大学
项目金额: 25万元
中文摘要: 利用太阳等离子体的光谱数据和光子传输理论,可以对太阳等离子体谱线的不透明度进行分析,进而对其光学厚度、电子温度、离子温度、电子数密度和发射层厚度等特性进行研究。本项目在此基础上,对此理论进行进一步研究。主要内容包括:一.发展从两条共同低能级谱线的强度比反演不透明度的理论。相对于从两条共同高能级谱线的强度比反演不透明度的方法,不仅简化计算,而且会提高研究的准确性;二.分析两条谱线强度比大于光学薄等离子体的物理机制,对此区域的奇特等离子体光学性质的本质进行理论分析。建立光子传输的较全面模型,提供等离子体光学性质的较为广泛的理论基础,提出光学超薄等离子体的概念。此研究将不仅提供研究太阳等离子体不透明度的新方法,而且提出捕获光子导致的等离子体的新光学特性,反映物理中的守恒原理,在光子传输和等离子体光谱研究中具有广泛的应用前景。
中文关键词: 太阳等离子体;光谱诊断;光子逃逸因子;光学厚;平衡
英文摘要: Using the spectral data of solar plasma and theory of photon transmission, we can analyze the opacity of solar plasma spectral line, and study the properties such as optical depth, electron temperature, ion temperatuer, electron density, radiation layer depth, and so on. On this basics, in this project, we will do further study on this theory. The main content contains: 1.We will develop the theory of deriving the opacity using the common lower levels. Comparing the theory of deriving the opacity using the common upper levels, we not only simplicity the calculation, but also improve the accuracy of the study.2.We will analyze the physical machanism of the intensity ratio is greater than that in optically thin plasma, and theoretically analyze essence of the strange plasma optical property in this field. We will establish the more overall model provide extensive theory basics for plasma optical property, and presnet the concept of optically ultra-thin plasma.In this study, we not only provide new method to study the opacity of solar plasma, but also present the new plasma optical property by capture photons, which reflects the principle of conservation and has wider application prospect in the study of photon transmission and plasma spectrum.
英文关键词: Solar plasma;Spectral diagnostic;Photon escape factor;Optically thick;Equilibrium