2D collisional-radiative model for non-uniform argon plasmas: with or without ‘escape factor’
2D collisional-radiative model for non-uniform argon plasmas: with or without ‘escape factor’
复制标题
非均匀氩等离子体的二维碰撞辐射模型:有或没有“逃逸因子”
DOI:
10.1088/0022-3727/48/8/085201
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
U. Czarnetzki
中科院分区:
文献类型:
--
作者:
X.-M. Zhu;Ts. V. Tsankov;D. Luggenhölscher;U. Czarnetzki
Collisional-radiative models for excited rare-gas atoms in low-temperature plasmas are a widely investigated topic. When these plasmas are optically thick, an'escape factor'is introduced into the models to account for the reabsorption of photons (so-called radiation trapping process). This factor is usually obtained assuming a uniform density profile of the excited species; however, such an assumption is often not satisfied in a bounded plasma. This article reports for the first time a self-consistent collisional-radiative model without using an ad hoc'escape factor'for excited Ar atoms in the 2p states (in Paschen's notation). Rather, the rate balance equations—ie the radiation transfer equations—of the 2p states are numerically solved to yield the actual density profiles. The predictions of this self-consistent model and a model based on the escape factor concept are compared with spatially-resolved emission measurements in a low-pressure inductive Ar plasma. The self-consistent model agrees well with the experiment but the'escape factor'model shows considerable deviations. By the comparative analysis the limitations and shortcomings of the escape factor concept as adopted in a significant number of works are revealed.
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DOI:
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发表时间:
2012
期刊:
影响因子:
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作者:
Y. Golubovskii;S. Gorchakov;H. Lange;A. Timofeev;Dirk Uhrlandt;Jörn Winter
通讯作者:
Jörn Winter
DOI:
10.1103/physreva.46.149
发表时间:
1992-07
期刊:
Physical review. A, Atomic, molecular, and optical physics
影响因子:
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作者:
W. Chan;G. Cooper;X. Guo;G. Burton;C. E. Brion
通讯作者:
W. Chan;G. Cooper;X. Guo;G. Burton;C. E. Brion
DOI:
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发表时间:
2012
期刊:
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作者:
N. Claire;S. Mazouffre;C. Rebont;F. Doveil
通讯作者:
F. Doveil
DOI:
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发表时间:
2002
期刊:
影响因子:
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作者:
C. Johnston;van der Hwp Harm Heijden;G. G. Janssen;V. J. Dijk;van der J.J.A.M. Mullen
通讯作者:
van der J.J.A.M. Mullen
DOI:
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发表时间:
2005
期刊:
影响因子:
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作者:
Y. Golubovskii;I. A. Porokhova;H. Lange;D. Uhrlandt
通讯作者:
D. Uhrlandt