SPONTANEOUS RADIATION BY A 3-LEVEL ATOM IN A DISSIPATIVE MEDIUM

被引：3
|
作者：
CAO, H
CAO, CQ
机构：
[1] BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA
[2] PRINCETON UNIV,DEPT MECH & AEROSP ENGN,PRINCETON,NJ 08544
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1995年 / 28卷 / 06期
关键词：
D O I：
10.1088/0953-4075/28/6/013
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Spontaneous radiation by three-level atoms in a dissipative medium (such as plasma) has been investigated by Langevin equations and the modified Weisskopf-Wigner approximation. General formulae for calculating spontaneous emission coefficients, i.e. Einstein A coefficients, are presented. Numerical calculation shows that the dissipation of plasmas can modify the spontaneous emission coefficients significantly and causes a pit in the coefficient-density curves for relatively low temperature plasmas, and also a pit in the coefficient-temperature curves.
引用
收藏
页码：979 / 988
页数：10
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