Photoionization of Rb2+ ions in the valence energy region 37–44 eV
Abstract
Absolute photoionization cross sections for the Rb2+ ion were recently measured at high resolution over the energy range 37.31–44.08 eV, with autoionizing Rydberg resonance series identified, using the photon-ion merged-beam setup at the Advanced Light Source (als) in Berkeley (Macaluso D A et al 2016 J. Phys. B: At. Mol. Opt. Phys. 49, 235002; 2017 50, 119501). Detailed photon-energy scans taken at 13.5 ± 2.5 meV bandwidth illustrated multiple Rydberg resonance series associated with the ground and metastable states. Here we present theoretical cross section results obtained using the Dirac–Coulomb R-matrix approximation with a detailed analysis of the resonances. The calculations were performed for the $$3{d}^{10}4{s}^{2}4{p}^{5}{}^{2}{{{\rm{P}}}^{{\rm{o}}}}_{J}$$, $$J=\tfrac{3}{2}$$ ground state and the corresponding $$3{d}^{10}4{s}^{2}4{p}^{5}{}^{2}{{{\rm{P}}}^{{\rm{o}}}}_{J},J=\tfrac{1}{2}$$ metastable level. Finally, results from the large-scale calculations are benchmarked against the als high-resolution measurements and reproduce the dominant resonance features in the spectra, providing confidence in the theoretical work for astrophysical applications.
- Authors:
-
- Queen's Univ., Belfast, Northern Ireland (United Kingdom); Harvard & Smithsonian, Cambridge, MA (United States)
- Harvard & Smithsonian, Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1526968
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Journal of Physics. B, Atomic, Molecular and Optical Physics
- Additional Journal Information:
- Journal Volume: 52; Journal Issue: 12; Journal ID: ISSN 0953-4075
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS
Citation Formats
McLaughlin, Brendan M., and Babb, James F. Photoionization of Rb2+ ions in the valence energy region 37–44 eV. United States: N. p., 2019.
Web. doi:10.1088/1361-6455/ab1e99.
McLaughlin, Brendan M., & Babb, James F. Photoionization of Rb2+ ions in the valence energy region 37–44 eV. United States. https://doi.org/10.1088/1361-6455/ab1e99
McLaughlin, Brendan M., and Babb, James F. 2019.
"Photoionization of Rb2+ ions in the valence energy region 37–44 eV". United States. https://doi.org/10.1088/1361-6455/ab1e99. https://www.osti.gov/servlets/purl/1526968.
@article{osti_1526968,
title = {Photoionization of Rb2+ ions in the valence energy region 37–44 eV},
author = {McLaughlin, Brendan M. and Babb, James F.},
abstractNote = {Absolute photoionization cross sections for the Rb2+ ion were recently measured at high resolution over the energy range 37.31–44.08 eV, with autoionizing Rydberg resonance series identified, using the photon-ion merged-beam setup at the Advanced Light Source (als) in Berkeley (Macaluso D A et al 2016 J. Phys. B: At. Mol. Opt. Phys. 49, 235002; 2017 50, 119501). Detailed photon-energy scans taken at 13.5 ± 2.5 meV bandwidth illustrated multiple Rydberg resonance series associated with the ground and metastable states. Here we present theoretical cross section results obtained using the Dirac–Coulomb R-matrix approximation with a detailed analysis of the resonances. The calculations were performed for the $3{d}^{10}4{s}^{2}4{p}^{5}{}^{2}{{{\rm{P}}}^{{\rm{o}}}}_{J}$, $J=\tfrac{3}{2}$ ground state and the corresponding $3{d}^{10}4{s}^{2}4{p}^{5}{}^{2}{{{\rm{P}}}^{{\rm{o}}}}_{J},J=\tfrac{1}{2}$ metastable level. Finally, results from the large-scale calculations are benchmarked against the als high-resolution measurements and reproduce the dominant resonance features in the spectra, providing confidence in the theoretical work for astrophysical applications.},
doi = {10.1088/1361-6455/ab1e99},
url = {https://www.osti.gov/biblio/1526968},
journal = {Journal of Physics. B, Atomic, Molecular and Optical Physics},
issn = {0953-4075},
number = 12,
volume = 52,
place = {United States},
year = {Tue May 28 00:00:00 EDT 2019},
month = {Tue May 28 00:00:00 EDT 2019}
}
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