X-Ray Absorption Spectrum of the N2+ Molecular Ion
(2020) In Physical Review Letters 124(20).- Abstract
The X-ray absorption spectrum of N2+ in the K-edge region has been measured by irradiation of ions stored in a cryogenic radio frequency ion trap with synchrotron radiation. We interpret the experimental results with the help of restricted active space multiconfiguration theory. Spectroscopic constants of the 1σu-1 ς2u+ state, and the two 1σu-13σg-11πg Π2u states are determined from the measurements. The charge of the ground state together with spin coupling involving several open shells give rise to double excitations and configuration mixing, and a complete breakdown of the orbital picture for higher lying core-excited states.
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- author
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 124
- issue
- 20
- article number
- 203001
- publisher
- American Physical Society
- external identifiers
-
- pmid:32501042
- scopus:85085842970
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.124.203001
- language
- English
- LU publication?
- yes
- id
- 0a6dc8f2-53c1-4cc8-b6bb-1db34b67eaec
- date added to LUP
- 2020-12-28 11:25:45
- date last changed
- 2024-04-03 19:41:48
@article{0a6dc8f2-53c1-4cc8-b6bb-1db34b67eaec, abstract = {{<p>The X-ray absorption spectrum of N2+ in the K-edge region has been measured by irradiation of ions stored in a cryogenic radio frequency ion trap with synchrotron radiation. We interpret the experimental results with the help of restricted active space multiconfiguration theory. Spectroscopic constants of the 1σu-1 ς2u+ state, and the two 1σu-13σg-11πg Π2u states are determined from the measurements. The charge of the ground state together with spin coupling involving several open shells give rise to double excitations and configuration mixing, and a complete breakdown of the orbital picture for higher lying core-excited states.</p>}}, author = {{Lindblad, R. and Kjellsson, L. and Couto, R. C. and Timm, M. and Bülow, C. and Zamudio-Bayer, V. and Lundberg, M. and Von Issendorff, B. and Lau, J. T. and Sorensen, S. L. and Carravetta, V. and Ågren, H. and Rubensson, J. E.}}, issn = {{0031-9007}}, language = {{eng}}, number = {{20}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{X-Ray Absorption Spectrum of the N2+ Molecular Ion}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.124.203001}}, doi = {{10.1103/PhysRevLett.124.203001}}, volume = {{124}}, year = {{2020}}, }