Brown G V, Hansen S B, Träbert E, Beiersdorfer P, Widmann K, Chen H, Chung H K, Clementson J H T, Gu M F, Thorn D B
Lawrence Livermore National Laboratory, Livermore, California 94550-9234, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jun;77(6 Pt 2):066406. doi: 10.1103/PhysRevE.77.066406. Epub 2008 Jun 23.
Measurements of the L -shell emission of highly charged gold ions were made under controlled laboratory conditions using the SuperEBIT electron beam ion trap, allowing detailed spectral observations of lines from Fe-like Au53+ through Ne-like Au69+ . Using atomic data from the Flexible Atomic Code, we have identified strong 3d_{52}-->2p_{32} emission features that can be used to diagnose the charge state distribution in high energy density plasmas, such as those found in the laser entrance hole of hot hohlraum radiation sources. We provide collisional-radiative calculations of the average ion charge Z as a function of temperature and density, which can be used to relate charge state distributions inferred from 3d_{52}-->2p_{32} emission features to plasma conditions, and investigate the effects of plasma density on calculated L -shell Au emission spectra.
在实验室可控条件下，利用超级电子束离子阱对高电荷态金离子的L壳层发射进行了测量，从而能够对类铁Au53 +到类氖Au69 +的谱线进行详细的光谱观测。利用灵活原子程序中的原子数据，我们识别出了强3d_{52}→2p_{32}发射特征，这些特征可用于诊断高能量密度等离子体中的电荷态分布，比如在热黑腔辐射源的激光入射孔中发现的等离子体。我们提供了平均离子电荷Z随温度和密度变化的碰撞辐射计算结果，该结果可用于将从3d_{52}→2p_{32}发射特征推断出的电荷态分布与等离子体条件相关联，并研究等离子体密度对计算出的L壳层金发射光谱的影响。
