The opacity information of a finite-temperature plasma is an important property and requires the population distribution of a given plasma condition. A population kinetic code for plasma spectroscopy, FLYCHK, has been widely used by researchers to study the spectroscopic properties of high-energy-density plasmas under a wide range of conditions. In this study, the FLYCHK calculation of the Planck and Rosseland mean opacities of low- to high-Z elements, such as aluminum (Z = 13), iron (Z = 26), and gold (Z = 79), under a wide temperature and density range (T = 10⁻³–10¹ keV, ρ = 10⁻⁶–10² g/cc) is reported. This study mainly focused on the quantitative comparisons of FLYCHK opacities with commonly used opacities: ATOMIC and PROPACEOS. Comparisons show that the FLYCHK mean opacities are comparable to other results over a wide range of plasma conditions. Aluminum opacities were analyzed in detail to understand the characteristics of FLYCHK opacity simulations.

有限温度等离子体的不透明度信息是重要的属性，并且需要给定等离子体条件下的总体分布。研究人员已广泛使用等离子体光谱的总体动力学代码FLYCHK来研究在各种条件下的高能量密度等离子体的光谱特性。在这项研究中，普朗克和罗斯兰的FLYCHK计算表明，在宽范围内，低至高Z元素（例如铝（Z = 13），铁（Z = 26）和金（Z = 79））的不透明度温度和密度范围（T = 10 ⁻³ –10 ¹ keV，ρ= 10 ⁻⁶ –10 ²g / cc）。这项研究主要侧重于FLYCHK不透明度与常用不透明度的定量比较：ATOMIC和PROPACEOS。比较表明，在广泛的血浆条件下，FLYCHK平均混浊度可与其他结果相媲美。详细分析了铝的不透明度，以了解FLYCHK不透明度模拟的特征。