Avetissian H K, Ghazaryan A G, Matevosyan H H, Mkrtchian G F
Centre of Strong Fields Physics, Yerevan State University, 1 A. Manukian, Yerevan 0025, Armenia.
Plasma Theory Group, Institute of Radiophysics and Electronics, NAS RA, 0203 Ashtarak, Armenia.
Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Oct;92(4):043103. doi: 10.1103/PhysRevE.92.043103. Epub 2015 Oct 7.
The microscopic quantum theory of plasma nonlinear interaction with the coherent shortwave electromagnetic radiation of arbitrary intensity is developed. The Liouville-von Neumann equation for the density matrix is solved analytically considering a wave field exactly and a scattering potential of plasma ions as a perturbation. With the help of this solution we calculate the nonlinear inverse-bremsstrahlung absorption rate for a grand canonical ensemble of electrons. The latter is studied in Maxwellian, as well as in degenerate quantum plasma for x-ray lasers at superhigh intensities and it is shown that one can achieve the efficient absorption coefficient in these cases.
