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.
- 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. doi: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}
}
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https://doi.org/10.1088/1361-6455/ab39c8
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