New Energy Levels and Transitions of 5s25p2 (6d+7s) Configurations in Xe IV

Jorge Reyna Almandos,Cesar J B Pagan,Mónica Raineri,Mario Gallardo

doi:10.3390/atoms7040108

Jorge Reyna Almandos, Cesar J B Pagan + Show 2 more

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https://doi.org/10.3390/atoms7040108

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Journal: Atoms	Publication Date: Dec 17, 2019
Citations: 1	License type: CC BY 4.0

Affiliation: Centro de Investigaciones Cardiovasculares

Abstract

Three-times ionized xenon Xe IV spectrum in the 1070–6400 Å region was analyzed using a pulsed discharge light source. A set of 163 transitions was classified for the first time, and 36 new energy levels belonging to the 5s25p26d and 5s25p27s even configurations were determined. The relativistic Hartree–Fock method, including core-polarization effects, were used. In these calculations, the electrostatic parameters were optimized by a least-square procedure in order to improve the adjustment to experimental energy levels. We also present a calculation based on a relativistic multiconfigurational Dirac–Fock approach.

Highlights

There is great interest in spectroscopy data of Xenon due to their applications in collision physics, astrophysics, and laser physics
The Xe VI and Xe VII lines were observed in the ultraviolet spectrum of the hot DO-type white dwarf RE 0503-289 [7,8]
More recently the study by Raineri et al [15] reported the weighted oscillator strengths and cancellation factor (CF), calculated from fitted values of the energy parameters of all 769 dipole electric lines belonging to the Xe IV spectrum reported in the compilation [11], including 49 new classified lines

Summary

Introduction

There is great interest in spectroscopy data of Xenon due to their applications in collision physics, astrophysics, and laser physics Various atomic parameters, such as energy levels, oscillator strengths, transition probabilities, and radiative lifetimes, have many important astrophysical applications. More recently the study by Raineri et al [15] reported the weighted oscillator strengths and cancellation factor (CF), calculated from fitted values of the energy parameters of all 769 dipole electric lines belonging to the Xe IV spectrum reported in the compilation [11], including 49 new classified lines. In order to proceed withthe study of the threetimes ionized xenon spectrum, a new spectral analysis of this ion is presented in this paper. We present a multiconfigurational relativistic approach for the Dirac equation (MCDF), by using the general relativistic atomic structure package (GRASP) [19]

Experimental Methods

Results and Discussion

Conclusions