论文标题

密集的等离子体的电荷状态分布

Charge State Distributions in Dense Plasmas

论文作者

White, J., Johns, W., Fontes, C. J., Gill, N. M., Shaffer, N. R., Starrett, C. E.

论文摘要

热,致密的等离子体中的电荷状态分布是计算频谱量之类的关键成分。但是,由于Saha-Boltzmann这样的模型对于致密的量子等离子体来说是不可靠的,因此它们是具有挑战性的。在这里,我们为电荷状态分布提供了一个新的变分模型,以及一个简单的模型,用于包括轨道松弛效果的配置能量。与其他方法的比较表明,通常与平均原子的计算,Saha-Boltzmann方法的分解以及与化学模型的混合一致的一致性。我们得出的结论是,新模型给出了一种相对便宜但相对高的保真度方法,用于计算局部热力学平衡中热量血浆中的电荷状态分布。

Charge state distributions in hot, dense plasmas are a key ingredient in the calculation of spectral quantities like the opacity. However, they are challenging to calculate, as models like Saha-Boltzmann become unreliable for dense, quantum plasmas. Here we present a new variational model for the charge state distribution, along with a simple model for the energy of the configurations that includes the orbital relaxation effect. Comparison with other methods reveals generally good agreement with average atom based calculations, the breakdown of the Saha-Boltzmann method, and mixed agreement with a chemical model. We conclude that the new model gives a relatively inexpensive, but reasonably high fidelity method of calculating the charge state distribution in hot dense plasmas, in local thermodynamic equilibrium.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源