RADIATION TRAPPING UNDER CONDITIONS OF LOW TO MODERATE LINE-CENTER OPTICAL DEPTH

被引:33
作者
COLBERT, T
HUENNEKENS, J
机构
[1] Department of Physics, Lehigh University, Bethlehem
来源
PHYSICAL REVIEW A | 1990年 / 41卷 / 11期
关键词
D O I
10.1103/PhysRevA.41.6145
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We have studied trapping of resonance radiation under conditions of moderate to low line-center optical depths in sodium-argon mixtures. We report measured effective radiative decay rates, which are compared with predictions of the Post [Phys. Rev. A 33, 2003 (1986)] and the Milne [J. Lond. Math. Soc. 1, 40 (1926)] theories of radiation trapping. These theories are expected to be valid for spectral lines with low to moderate line-center optical depths, where the commonly used Holstein [Phys. Rev. 72, 1212 (1947); 83, 1159 (1951)] theory of radiation trapping is expected to break down. The experiment was performed under conditions in which the trapping was dominated by either the Doppler-broadened Gaussian or by the impact-broadened Lorentzian line-shape function. The measured effective radiative decay rates agree well with those predicted by the Milne and Post theories over the range of low to moderate optical depth. © 1990 The American Physical Society.
引用
收藏
页码:6145 / 6154
页数:10
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