标题:
利用电子碰撞模型诊断星际介质H II空间温度的理论模拟Theoretical Simulation of Temperature Diagnostic for the H II Interstellar Medium Space Using the Electron Impact Model
作者:
贺健, 张庆国
关键字:
星际介质, 碰撞平衡, 温度诊断, S III离子河南科技大学物理工程学院, 河南 洛阳
期刊名称:
《Astronomy and Astrophysics》, Vol.3 No.1, 2015-03-03
摘要:
本文利用离子和自由电子碰撞产生的激发和退激发模型，理论分析了星际介质等离子体的碰撞平衡条件，并且分析了在碰撞平衡条件下三能级等离子体的温度诊断的原理。以星际介质H II空间的S III离子为例，分析了碰撞平衡条件下根据谱线强度比诊断等离子体温度的原理和方法，并和常用的局域热平衡条件下的温度诊断进行了比较，得到了一些重要结论。本研究对空间等离子体温度诊断具有重要参考意义和价值。
In this paper, using the excitation and de-excitation by impact of ion and free electron, we analyze the impact equilibrium condition of interstellar medium plasma, and discuss the diagnostic prin-ciple for temperature diagnostic for the plasma with three levers. Taking the S III ion in H II in-terstellar medium space as an example, we discuss the temperature diagnostic principle and me-thod by intensity ratio under the condition of impact equilibrium, and compare the result with under the condition of local thermal equilibrium, and we obtain some important conclusions. This study will be significant in space plasma diagnostic.