Relations between the ionization or recombination flux and the emission radiation for hydrogen and helium in plasma
Relations between the ionization or recombination flux and the emission radiation for hydrogen and helium in plasma
复制标题
等离子体中氢和氦的电离或复合通量与发射辐射之间的关系
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
T. Fujimoto
中科院分区：
文献类型：
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作者：
M. Goto;K. Sawada;T. Fujimoto
在建立了中性氢、中性氦和电离氦的碰撞辐射模型的基础上，研究了电离通量或复合通量与每一种具有代表性的可见光线的光子发射率之间的关系。结果表明，这两种通量都与光子发射速率成正比，而比例因子在实际应用范围内对等离子体参数的依赖程度较弱。这意味着观测到的发射线强度可以很好地测量电离通量或复合通量。考虑了总辐射功率率与电离或复合通量之间的关系。对于处于电离平衡中的氢等离子体，Balmer-α线强度在最适温度1.3 eV附近达到最大值，而对于处于电离平衡之外的等离子体，在该温度附近达到最小值。后一种特性对应于最近观测到的“逆边局域模式”。
On the basis of the collisional-radiative models for neutral hydrogen, and neutral and ionized helium, the relationship between the ionization flux or the recombination flux and the photon emission rate of a representative visible line of each species is investigated. It is found that both fluxes are proportional to the photon emission rate and that the proportionality factor depends rather weakly on the plasma parameters in the ranges of practical interest. This implies that the observed emission line intensity can be a good measure of the ionization flux or the recombination flux. The relation between the total radiation power rate and the ionization or recombination flux is also considered. For a hydrogen plasma in ionization balance the Balmer-α line intensity takes the maximum value near the optimum temperature of 1.3 eV, while for plasmas out of ionization balance it takes the minimum near that temperature. This latter characteristic corresponds to the recently observed “inverse edge-localized mode”...