低温等离子体中H_2(D_2和T_2)的振动分布  

Vibrational distribution of H_2(D_2 and T_2) molecules in low temperature plasma

作　　者：何曼丽[1] 王晓[1] 张明[1] 王黎[1] 宋蕊[1] 

机构地区：[1]解放军理工大学理学院,南京210007

出　　处：《物理学报》2014年第12期175-180,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:03053751);解放军理工大学理学院青年科研基金(批准号:KYLYZL001315)资助的课题~~

摘　　要：在边界等离子体中,氢分子具有相当高的密度,这些分子与等离子体发生碰撞可使氢分子的振动分布发生变化.本文讨论氢分子的行为,采用了最新的截面数据,对于文献中尚无可利用的截面,运用半经典的Gryzinski方法进行计算.基于准静态近似和准稳态碰撞辐射模型对氢及其同位素分子D2和T2的振动分布进行了研究.结果表明:当电子温度低于10 eV时,氢及其同位素分子的振动分布在较低的振动能级随着电子温度的升高而减小;而在较高的振动能级,分布则呈现相反趋势.In edge plasma, hydrogen molecules have considerably high density. The vibrational distribution of hydrogen can be changed via collisions with plasma. In this paper, various processes of hydrogen molecules are discussed and newest cross section data are adopted while the unavailable data are calculated by semi-classical Gryzinski method. Based on the quasi-stationary approximation and the quasi-steady collisional-radiative model, the vibratioanl distribution of hydrogen in low temperature are studied. The results show that at lower vibrational level, the distribution decreases with the increase of electron temperature when the electron temperature is less than 10 eV. On the other hand, the distribution presents an opposite trend at high vibrational level.

关 键 词：振动分布 氢分子 低温等离子体 

分 类 号：O53[理学—等离子体物理]