Abstract

The thirteen times ionized tungsten is isoelectronic with PmI. Wavelengths and transition probabilities for the 5s-5p and 5p-5d transitions of WXIV, identifying the ground state as 4f13 5s2 2F7/2 were calculated. Both, a relativistic Hartree Fock approach, including core-polarization effects, and a purely relativistic multiconfiguration Dirac-Fock method were used for the calculations. Particularly, 5s-5p transitions were compared with experimental results obtained with VUV electron beam ion trap (EBIT) spectroscopy.

Highlights

  • The thirteen times ionized tungsten (WXIV) is isoelectronic with PmI

  • We took into account the core polarization effects that refer to the deformation of the internal atomic orbitals due to the orbit of the active electron, which repels the remaining electrons

  • The Relativistic Hartree–Fock method In Cowan’s package, wavefunctions are calculated in a Hartree–Fock approximation with relativistic corrections

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Summary

Introduction

The thirteen times ionized tungsten (WXIV) is isoelectronic with PmI. Reliable spectroscopic parameters in the tungsten atom are of fundamental importance for the study of fusion plasmas, but some discrepancies remain unsolved. Raftopoulos [2] used a more sophisticated multiconfigurational relativistic approach to identify the ground state as 4f13 5s2 2F5/2, but predicting the wavelengths of 5s-5p transitions far away from the experimental values [3].

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