lonization state of a laser plasma

A hydrodynamic deflagration model of the laser corona is used to calculate the ionic composition of a laser plasma for carbon and calcium targets and for different laser radiation flux densities. Account is taken of the influence of the ionization kinetics on the hydrodynamics. It is found that the ionization leads to a considerable increase in the steepness of the electron temperature profile and is of transient nature; at a distance of the order of several tens of microns from the target surface the ionic composition becomes essentially constant. The results of the calculations are compared with the data obtained from the spectra of multiply charged ions in the far vacuum ultraviolet region.