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Title: Photoionization of tungsten ions: experiment and theory for W5+

Abstract

Experimental and theoretical cross sections are reported for single-photon single ionization of W5+ ions. Absolute measurements were conducted employing the photon-ion merged-beams technique. Detailed photon-energy scans were performed at (67 ± 10) meV resolution in the 20-160 eV range. In contrast to photoionization of tungsten ions in lower charge states, the cross section is dominated by narrow, densely-spaced resonances. Theoretical results were obtained from a Dirac-Coulomb R-matrix approach employing a basis set of 457 levels providing cross sections for photoionization of W5+ ions in the 4ƒ145s25p66s 2D3/2 ground level as well as the 4ƒ145s25p65d 2D5/2 and 4ƒ145s25p66s 2S1/2 metastable excited levels. Considering the complexity of the electronic structure of tungsten ions in low charge states, the agreement between theory and experiment is satisfactory.

Authors:
ORCiD logo; ORCiD logo; ; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1561372
Alternate Identifier(s):
OSTI ID: 1580945
Grant/Contract Number:  
AC02-05CH11231; FG02-03ER15424
Resource Type:
Published Article
Journal Name:
Journal of Physics. B, Atomic, Molecular and Optical Physics
Additional Journal Information:
Journal Name: Journal of Physics. B, Atomic, Molecular and Optical Physics Journal Volume: 52 Journal Issue: 19; Journal ID: ISSN 0953-4075
Publisher:
IOP Publishing
Country of Publication:
United Kingdom
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; photoionization; VUV; tungsten

Citation Formats

Müller, A., Schippers, S., Hellhund, J., Kilcoyne, A. L. D., Phaneuf, R. A., and McLaughlin, B. M. Photoionization of tungsten ions: experiment and theory for W5+. United Kingdom: N. p., 2019. Web. https://doi.org/10.1088/1361-6455/ab39c8.
Müller, A., Schippers, S., Hellhund, J., Kilcoyne, A. L. D., Phaneuf, R. A., & McLaughlin, B. M. Photoionization of tungsten ions: experiment and theory for W5+. United Kingdom. https://doi.org/10.1088/1361-6455/ab39c8
Müller, A., Schippers, S., Hellhund, J., Kilcoyne, A. L. D., Phaneuf, R. A., and McLaughlin, B. M. Thu . "Photoionization of tungsten ions: experiment and theory for W5+". United Kingdom. https://doi.org/10.1088/1361-6455/ab39c8.
@article{osti_1561372,
title = {Photoionization of tungsten ions: experiment and theory for W5+},
author = {Müller, A. and Schippers, S. and Hellhund, J. and Kilcoyne, A. L. D. and Phaneuf, R. A. and McLaughlin, B. M.},
abstractNote = {Experimental and theoretical cross sections are reported for single-photon single ionization of W5+ ions. Absolute measurements were conducted employing the photon-ion merged-beams technique. Detailed photon-energy scans were performed at (67 ± 10) meV resolution in the 20-160 eV range. In contrast to photoionization of tungsten ions in lower charge states, the cross section is dominated by narrow, densely-spaced resonances. Theoretical results were obtained from a Dirac-Coulomb R-matrix approach employing a basis set of 457 levels providing cross sections for photoionization of W5+ ions in the 4ƒ145s25p66s 2D3/2 ground level as well as the 4ƒ145s25p65d 2D5/2 and 4ƒ145s25p66s 2S1/2 metastable excited levels. Considering the complexity of the electronic structure of tungsten ions in low charge states, the agreement between theory and experiment is satisfactory.},
doi = {10.1088/1361-6455/ab39c8},
journal = {Journal of Physics. B, Atomic, Molecular and Optical Physics},
number = 19,
volume = 52,
place = {United Kingdom},
year = {2019},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1088/1361-6455/ab39c8

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Cited by: 3 works
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    Works referencing / citing this record:

    Electron-impact single ionisation of W q + ions: experiment and theory for 11 ≤ q ≤ 18
    journal, January 2019

    • Schury, D.; Borovik, A.; Ebinger, B.
    • Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 53, Issue 1
    • DOI: 10.1088/1361-6455/ab51e9

    Electron-impact ionization of W 5 +
    journal, December 2019