Calculation of the polarization fraction and electron-impact excitation cross section for the Cd+ (5p) 2P3/2 state

Christopher J. Bostock, Dmitry V. Fursa, Igor Bray, and Klaus Bartschat
Phys. Rev. A 90, 012707 – Published 21 July 2014

Abstract

We present relativistic convergent close-coupling and Breit-Pauli R-matrix calculations for the polarization of the light emitted after electron-impact excitation of the (5s)2S1/2(5p)2P3/2 transition in Cd+. While we find consistency between the theoretical predictions, a discrepancy persists with the measurements of Goto et al. [Phys. Rev. A 27, 1844 (1983)]. Cascade contributions and hyperfine depolarization effects were calculated and found to have negligible effect on the polarization fraction. We also present angle-integrated cross sections for the (5p)2P3/2 state to compare with the measurements of Gomonai [Optc. Spect. 94, 488 (2003)]. Agreement between theory and experiment is far from perfect, especially at low energies, where they disagree both in the absolute values and the energy dependence of the cross sections.

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  • Received 16 June 2014

DOI:https://doi.org/10.1103/PhysRevA.90.012707

©2014 American Physical Society

Authors & Affiliations

Christopher J. Bostock*, Dmitry V. Fursa2, and Igor Bray2

  • Australian Research Council Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia

Klaus Bartschat

  • Australian Research Council Centre for Antimatter-Matter Studies, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia and Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311, USA

  • *c.bostock@curtin.edu.au
  • klaus.bartschat@drake.edu

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Vol. 90, Iss. 1 — July 2014

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