Abstract
The present work proposes kinetics of ionization-recombination to carry out a research intostudy the charge state distribution of Au plasma. The first step is to calculate the average lifetime, energy level structure, degeneracy and partition function of Au 48+ ―Au 52+ by relativistic quantum mechanics, and next to compute then, the equilibrium constant and the second-order recombination rate constant by statistical thermodynamics. Based on these data, the solution of differential equations of consecutive- reversible ionization-recombination reactions are solved from whichlead to the charge state distribution and its average charge are derived. FinallyWe do not only give the average charge, but also derive the quantitative influence of electron temperature and density on average charge by electron temperature and electron densityis given in this paper. It is called the first-principles theory, for no experimental data is are needed.
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