Publication Date:
2016-05-11
Description:
We describe a collisional radiative model (CRE) of homogeneously expanded nickel plasmas in vacuum. The CRE model is coupled with two separate electron and ion temperature magneto-hydrodynamic equations. On the output, the model provides the temporal variation of the electron temperature, ion temperature, and average charge state. We demonstrate the effect of three-body recombination \(({\propto}N_{\rm e} T^{-9/2}_{\rm e})\) on plasma parameters, as it changes the time dependence of electron temperature from \(t^{-2}\) to \(t^{-1}\) and exhibits a pronounced effect leading to a freezing feature in the average charge state. In addition, the effect of the three-body recombination on the warm up of ions and delaying the equilibration is addressed.
Print ISSN:
0946-2171
Electronic ISSN:
1432-0649
Topics:
Physics