2017/02/24 by Youcef Aouad, Aouad, Y. J.
Engineering · Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #Laser-induced spectroscopy and plasma #Plasma Diagnostics and Applications #Plasma Physics (physics.plasm-ph)
paper · pdf · doi:10.48550/arxiv.1702.07658
openalex publication_date 2017/02/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In the present paper we give numerical estimations of the plasma ion electric microfield mixing dynamics rate. This rate was deduced from a quantum atomic density matrix formalism and corresponds to the mixing dynamics effect of energy levels by the plasma ion electric microfield. The rate in question is to be added to the usual collisional-radiative model for the modeling of dielectronic satellites originating from multi-excited atomic configurations to diagnose high density plasma regimes generated by the interaction of X-ray free electron lasers (XFEL's) with solid density matter. The obtained numerical values of this rate are compared to usual relaxation atomic rates of the collisional-radiative model in the case of three atomic energy levels of the doubly excited 2l2l' configuration of helium-like aluminium (Z = 13): 2p2 1D2, 2s2p 1P1 and 2p2 1S0. The comparison is made for different values of the electronic density ne (10+20, 10+22, 10+23, 10+24 cm-3) and for the electronic temperature Te = 500 eV. The numerical result shows that at high densities this rate is at the same order of magnitude as usual collisional-radiative rates and even exceed them in certain cases. This demonstrates the potential role of this rate for a better understanding of the heating mechanism underlying the evolution of a solid state matter to a plasma.