Analytical formula for radiation trapping with partial frequency redistribution
Analytical formula for radiation trapping with partial frequency redistribution
复制标题
部分频率重分布辐射捕获的解析公式
DOI：
10.1088/0022-3727/31/22/010
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
J. Curry
中科院分区：
文献类型：
--
作者：
J. Lawler;J. Curry
使用高度逼真的蒙特卡罗代码模拟辐射捕获，包括部分频率再分布的影响，以及由自然（辐射）展宽、共振碰撞展宽和多普勒展宽主导的谱线轮廓。294次模拟的结果用于确定圆柱形几何中在非常宽的参数空间范围内的基本模捕获衰减率，参数空间包括气体密度因子、柱半径因子1000和多普勒宽度因子1000。基模衰减率被拟合成一个用三维参数表示的解析公式，该公式可以方便地应用于各种气体、柱半径和多普勒宽度。
A highly realistic Monte Carlo code is used to simulate radiation trapping including effects due to partial frequency redistribution and with a spectral line profile dominated by natural (radiative) broadening resonance collisional broadening and Doppler broadening. Results from 294 simulations are used to determine the fundamental mode trapped decay rate in cylindrical geometry over a very wide range of parameter space including a factor of in gas density, a factor of 1000 in column radius, and a factor of 1000 in Doppler width. The fundamental mode decay rates are fitted to an analytical formula expressed in terms of three dimensionless parameters which can conveniently be applied to a variety of gases, column radii and Doppler widths.