SPECTROSCOPY OF MULTICHARGED IONS IN PLASMAS: OSCILLATOR STRENGTHS OF Be-LIKE ION Fe

Abstract

The generalized relativistic energy approach with using the Debye shielding model is used for studying spectral parameters of ions in plasma and determination of the oscillator strengths for the Be-like ions. An electronic Hamiltonian for N-electron ion in a plasma is added by the Yukawa-type electron-electron and nuclear interaction potential. Oscillator strengths gf for 2s 2-[2s 1/2 2p 3/2 ] 1 transition in Be-like Fe are computed for different values of the electron density and temperature (n e =10 22-10 24 cm-3 , T=0.5-2 keV) of plasmas are presented and compared with available alternative spectroscopic data.

СПЕКТРОСКОПІЯ БАГАТОЗАРЯДНИХ ІОНІВ В ПЛАЗМІ: СИЛИ ОСЦИЛЯТОРІВ ДЛЯ Be-ПОДІБНИХ ІОНІВ GaXXVIII і GeXXIX

“…The detailed description of our approach was earlier presented (see, for example, Refs. [3][4][5]). Therefore, below we are limited only by the key points.…”

“…Spectroscopy of multicharged ions in a plasmas is one of the most fast developing branches of modern atomic spectroscopy. The properties of laboratory and astrophysical plasmas have drawn considerable attention over the last decades [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. It is known that multicharged ions play an important role in the diagnostics of a wide variety of plasmas.…”

“…The electron-ion collisions play a major role in the energy balance of plasmas. ( [1][2][3][4][5][6]). Different theoretical methods were employed along with the Debye screening to study plasma medium.…”

“…Earlier we have developed a new version of a relativistic energy approach combined with the many-body perturbation theory (RMBPT) for multi-quasiparticle (QP) systems for studying spectra of plasma of the multicharged ions and electron-ion collisional parameters. The method is based on the Debye shielding model and energy approach [3][4][5]. A new element of this paper is in using the effective optimized Dirac-Kohn-Sham method in general relativistic energy approach to collision processes in the Debye plasmas.…”

“…In this paper, which goes on our work [3][4][5], we present the results of computing energy shifts and oscillator strengths gf for 2s 2 -[2s 1/2 2p 3/2 ] 1 transitions in the Be-like ions of GaXXVIII and GeXXIX, calculated for different values of the electron density and temperature ( n e =10 22 -10 24 cm -3 , T=0.5-2 keV) of plasmas and compared with available alternative spectroscopic data.…”