Theoretical He I Emissivities in the Case B Approximation
Theoretical He I Emissivities in the Case B Approximation
复制标题
B 近似情况下的理论 He I 发射率
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
K. MacAdam
中科院分区：
文献类型：
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作者：
R. Porter;R. P. Bauman;G. Ferland;K. MacAdam
我们用改进的辐射和碰撞数据计算了He Ⅰ类B复合级联谱。我们提出了新的电子温度和密度的范围内的发射率。我们的结果和目前的标准之间的差异是足够大，有显着的影响，不仅对各种各样的对象的观测光谱的解释，而且对原始氦丰度的测定。
We calculate the He I case B recombination cascade spectrum using improved radiative and collisional data. We present new emissivities over a range of electron temperatures and densities. The differences between our results and the current standard are large enough to have a significant effect not only on the interpretation of observed spectra of a wide variety of objects, but also on determinations of the primordial helium abundance.