MAICRM : A general model for rapid simulation of hot dense plasmas

TL;DR

MAICRM is a new, efficient model for simulating ionization and population distributions in hot dense plasmas, balancing detail and computational speed for integration into hydrodynamic simulations.

Contribution

It introduces a general, rapid simulation model that improves upon existing methods by considering detailed transitions while maintaining computational efficiency.

Findings

Accurately predicts mean ionizations and charge distributions.

Agrees with experimental and theoretical results for dense plasmas.

Faster than DCA/SCA models, suitable for hydrodynamic simulations.

Abstract

We propose a general model, Multi-Average Ion Collisional-Radiative Model (MAICRM), to rapid simulate the ionization and population distributions of hot dense plasmas. In MAICRM, the orbital occupation numbers of ions at the same charge stage are averaged and determined by the excitation and de-excitation processes; the populations of the average ions are determined by the ionization and recombination processes with the fixed orbital average occupation numbers in each ion. The calculated mean ionizations and charge state distributions of MAICRM are in general agreement with the other theoretical and experimental results especially for the mid- and high-density plasmas. Since MAICRM considers more detailed transitions and ionization balances than the average atom model and is faster than DCA/SCA models, this model has the advantage to be combined into hydrodynamic simulations.