Ionization State Calculation of Materials in High Energy Density System Based on an Improved Calculation Method of Individual Electron Accounting Model

In this paper, the Newton-Raphson method was applied to the Individual Electron Accounting Model(IEM) and the method for determining the Zimmerman-More parameters used for this model was established, therefore improving the method for calculating the ionization state of materials in the high energy density system.The research solution is as follows.First, the Newton-Raphson method was applied to the Individual Electron Accounting Model(IEM), so the method for calculating the model was improved.Second, The detailed calculation method for determining the Zimmerman-More parameters, which is included in the IEM calculation has been proposed, degeneracy factor considering pressure ionization and ionization potential lowering used in ionization state calculation were evaluated.In this work, an improved IEM was proposed and a new method for determining the Zimmerman–More parameters used in this model was established. The Zimmerman–More parameters were then obtained for materials with atomic numbers Z = 1–92. The calculation results for the Al and the Xe material obtained by our method was agreed with those by the BADGER code.Our results were published in “AIP Advances” (12, 015305(2022)) under the title of the “Ionization state calculation of materials in high energy density system based on an improved calculation method of individual electron accounting model” (https://doi.org/10.1063/5.0075251)

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