Identification of visible lines from multiply charged W8+ and W9+ ions

Priti, Momoe Mita, Daiji Kato, Izumi Murakami, Hiroyuki A. Sakaue, and Nobuyuki Nakamura
Phys. Rev. A 102, 042818 – Published 23 October 2020
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Abstract

We present an investigation of previously unidentified visible lines for W8+ and W9+ from the spectra observed using an electron-beam ion trap. The analysis is based on collisional-radiative (CR) modeling with fine-structure sublevel population kinetics. To ensure the identification of lines done by the CR model, we have also performed an accurate calculation of transition energies and transition probabilities within the multiconfigurational Dirac-Fock approach using grasp2018. In the spectrum, most of the observed lines are assigned as magnetic dipole transitions belonging to the first two lower-lying configurations of these ions.

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  • Received 17 August 2020
  • Accepted 2 October 2020

DOI:https://doi.org/10.1103/PhysRevA.102.042818

©2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalPlasma Physics

Authors & Affiliations

Priti1,*, Momoe Mita1, Daiji Kato2,3, Izumi Murakami2,4, Hiroyuki A. Sakaue2, and Nobuyuki Nakamura1

  • 1Institute for Laser Science, The University of Electro-Communications, Tokyo 182-8585, Japan
  • 2National Institute for Fusion Science, National Institutes of Natural Sciences, Toki, Gifu 509-5292, Japan
  • 3Department of Advanced Energy Engineering Science, Kyushu University, Fukuoka 816-8580, Japan
  • 4Department of Fusion Science, The Graduate University for Advanced Studies, SOKENDAI, Toki, Gifu 509-5292, Japan

  • *priti@ils.uec.ac.jp

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Issue

Vol. 102, Iss. 4 — October 2020

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