Atomic Structure and Relativistic Transition Modeling of Na-like Cs for Plasma Applications

The Multi-Configuration Dirac–Fock (MCDF) approach has been used to calculate the radiative data and energy levels for Cs XLV. For highly ionized Na-like Cs⁺⁴⁴ ions (Cs XLV), these statistics include the transition wavelength, transition rates, oscillator strength, line strength, and radiative rates like electric dipole (E1), quadrupole (E2), magnetic dipole (M1), and magnetic quadrupole (M2) transitions. The Flexible Atomic Code (FAC) and the General Purpose Relativistic Atomic Structure Package (GRASP) were the two codes used to compute the outcome. Our results for Cs XLV show strong agreement with the NIST data and other accessible data in terms of excitation energy, wavelength, oscillator strength, and line strength. Additionally evaluated are the plasma properties, including skin depth, electron density, line intensity ratios, and plasma frequency. We have calculated the strength of the emission and absorption oscillators for the first 50 spectral lines of the E1 transitions for Cs XLV. The impact of plasma temperatures on the skin depth, electron densities, line intensity ratio, and plasma frequency has been studied for Hot Dense Plasma (HDP). Lifetimes for the lowest 20 Cs XLV values have also been determined. The identification and assessment of spectral lines from different fusion plasma, solar, plasma modeling, and astrophysical studies could benefit from our presented atomic and radiative data of Na-like Cs.