A collisional-radiative model for optically accessible atomic oxygen lines in laboratory plasmas has been developed to identify dominant mechanisms and assess the validity and utility for plasma diagnostics. A rate sensitivity analysis of the common 777 nm/844 nm line ratio was carried out and used to determine the importance of often ignored mechanisms including cascade emission and metastable excitation. Commonly used basic models for emission of these lines is compared to the model developed here and the mechanisms responsible for disagreement are identified. At low pressures metastable excitation from the ##IMG## [http://ej.iop.org/images/0963-0252/29/1/015011/psstab5e5fieqn1.gif] {$3{\rm{s}}{}^{5}{\rm{S}}^\circ $} state becomes important and at high pressures collisional relaxation of ##IMG## [http://ej.iop.org/images/0963-0252/29/1/015011/psstab5e5fieqn2.gif] {$3{\rm{p}}{}^{3}{\rm{P}}$} to ##IMG## {$3{\rm{p}}{}^{5...}

中文翻译：

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级联发射和亚稳态激发在模拟实验室等离子体中强原子氧谱线中的重要性

已经开发了实验室等离子体中光学可访问的原子氧线的碰撞辐射模型，以识别主要机理并评估等离子体诊断的有效性和实用性。进行了常见的777 nm / 844 nm线宽比的速率灵敏度分析，并将其用于确定经常被忽略的机制（包括级联发射和亚稳态激发）的重要性。将这些线的发射的常用基本模型与此处开发的模型进行比较，并确定造成分歧的机制。在低压下，来自## IMG ##的亚稳态激发[http://ej.iop.org/images/0963-0252/29/1/015011/psstab5e5fieqn1.gif] {$ 3 {\ rm {s}} {} ^ {5} {\ rm {S}} ^ \ circ $}状态变得很重要，并且在高压下## IMG ## [http：//ej.iop。