Transient behavior of a nonequilibrium plasma formed by merged beams

被引:13
作者
Hahn, Y
Li, J
机构
[1] Department of Physics, University of Connecticut, Storrs
来源
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1996年 / 36卷 / 02期
关键词
RECOMBINATION;
D O I
10.1007/BF01426621
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
A low density, low temperature plasma formed by two merged beams of electrons and ions at near zero relative velocity is studied by solving a set of time-dependent rate equations. In particular, we investigate the role played by the radiative recombination (RR) and three-body recombination (TBR) on the population of excited states during the initial stage of plasma rearrangement and relaxation. It is found in the case of hydrogenic plasmas that low-lying states are filled predominantly by RR, while high Rydberg states are populated mainly by TBR. As the plasma further relaxes, the collisional excitation and de-excitation, and radiative decays become important, filling the median excited states. The dependence of the TBR and RR rates on ionic charge Z is discussed to extend the result to plasmas of high Z ions.
引用
收藏
页码:85 / 92
页数:8
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