Atomic data of intermediate autoionzing Rydberg series nf[K]J (n = 4, 5), nd[K]J (n = 5, 6), np[K]J (n = 6, 7) and ns[K]J (n = 7, 8) of neutral argon atom in the multiconfiguration Dirac-Hartree-Fock framework

Ola Hassouneh; Wa’el Salah

doi:10.1140/epjp/i2017-11589-2

EPJ

Atomic data of intermediate autoionzing Rydberg series nf[K]_J (n = 4, 5), nd[K]_J (n = 5, 6), np[K]_J (n = 6, 7) and ns[K]_J (n = 7, 8) of neutral argon atom in the multiconfiguration Dirac-Hartree-Fock framework

Ola Hassouneh¹ and Wa’el Salah²^*

¹ Department of Physics, The University of Jordan, 11942, Amman, Jordan
² Department of Physics, The Hashemite University, 13115, Zarqa, Jordan

Received: 9 April 2017
Accepted: 8 June 2017
Published online: 19 July 2017

Abstract

We report the results of an accurate computation of the energy levels, oscillator strengths $f_{ij}$ , the radiative transition rates $A_{ij}$ , the Landé g-factor, the magnetic dipole and the electric quadrupole hyperfine constants of the intermediate Rydberg series $n{\rm f}[K]_{J}$ $ (n = 4, 5)$

, $n{\rm d}[K]_{J}$ $ (n = 5, 6)$

, $n{\rm p}[K]_{J}$ $(n = 6, 7)$

and $n{\rm s}[K]_{J}$ $(n = 7, 8)$

relative to the ground state 3p⁶ ¹S₀ for neutral argon atom spectra based on the multiconfiguration Dirac-Hartree-Fock (MCDHF) approach. In this approach, the quantum electrodynamics (QED) effects with transverse photon Breit interaction and vacuum photon polarization self-energy corrections are included. Moreover, the perturbation due to the core-polarization and electron correlation effects are taken into account. We also reported the oscillator strengths and transition rates in Coulomb and Babushkin gauges for the 3p⁵(²P)3d-3p⁵(²P)4f, 3p⁵(²P)3d-3p⁵(²P)5f, 3p⁵(²P)4d-3p⁵(²P)4f, 3p⁵(²P)4d-3p⁵(²P)5f, 3p⁵(²P)5d-3p⁵(²P)4f, 3p⁵(²P)5d-3p⁵(²P)5f, 3p⁵(²P)6d-3p⁵(²P)4f and 3p⁵(²P)6d-3p⁵(²P)5f transition arrays as well as the 3p⁵(²P)5d-3p⁵(²P)6p, 3p⁵(²P)7s-3p⁵(²P)6p, 3p⁵(²P)7s-3p⁵(²P)7p and 3p⁵(²P)8s-3p⁵(²P)7p transition arrays. Insofar as experimental or theoretical values by other authors exist, comparison is made with those values; it turns out that, for most of the levels, a rather satisfying agreement with these experimental and theoretical results is obtained, thus confirming the reliability of our data.

15th European Conference on Atoms Molecules and Photons (ECAMP)
June 30 to July 4, 2025
Innsbruck, Austria

EPJ

Atomic data of intermediate autoionzing Rydberg series nf[K]J (n = 4, 5), nd[K]J (n = 5, 6), np[K]J (n = 6, 7) and ns[K]J (n = 7, 8) of neutral argon atom in the multiconfiguration Dirac-Hartree-Fock framework

Conference announcements

Atomic data of intermediate autoionzing Rydberg series nf[K]_J (n = 4, 5), nd[K]_J (n = 5, 6), np[K]_J (n = 6, 7) and ns[K]_J (n = 7, 8) of neutral argon atom in the multiconfiguration Dirac-Hartree-Fock framework