X-ray-absorption spectrum of O2+
(2025) In Physical Review A 111(2).- Abstract
The x-ray absorption spectrum of the O2+ molecular cation is measured. The ions are stored in a cryogenically cooled radiofrequency ion trap and probed by tunable synchrotron radiation. The spectrum exhibits several salient features: a three-state composite π∗ resonance at the low-energy side followed by a two-component exchange split, a highly dissociative, σ∗ resonance pulled down well below the ionization limit; and a complex valence-Rydberg high-energy part, including several resolved bands. Small structures are interpreted as correlation state satellites with leading internal or semi-internal configurations. Calculations using the restricted active space wave functions and quantum wave packet dynamics offer an overall excellent... (More)
The x-ray absorption spectrum of the O2+ molecular cation is measured. The ions are stored in a cryogenically cooled radiofrequency ion trap and probed by tunable synchrotron radiation. The spectrum exhibits several salient features: a three-state composite π∗ resonance at the low-energy side followed by a two-component exchange split, a highly dissociative, σ∗ resonance pulled down well below the ionization limit; and a complex valence-Rydberg high-energy part, including several resolved bands. Small structures are interpreted as correlation state satellites with leading internal or semi-internal configurations. Calculations using the restricted active space wave functions and quantum wave packet dynamics offer an overall excellent interpretation of the spectral features.
(Less)
- author
- organization
- publishing date
- 2025-02
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review A
- volume
- 111
- issue
- 2
- article number
- 022808
- publisher
- American Physical Society
- external identifiers
-
- scopus:85218346902
- ISSN
- 2469-9926
- DOI
- 10.1103/PhysRevA.111.022808
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2025 American Physical Society.
- id
- c80d9b2c-d3d5-4d8f-ad79-e79406548a0b
- date added to LUP
- 2025-06-23 15:32:02
- date last changed
- 2025-06-23 15:32:51
@article{c80d9b2c-d3d5-4d8f-ad79-e79406548a0b, abstract = {{<p>The x-ray absorption spectrum of the O2+ molecular cation is measured. The ions are stored in a cryogenically cooled radiofrequency ion trap and probed by tunable synchrotron radiation. The spectrum exhibits several salient features: a three-state composite π∗ resonance at the low-energy side followed by a two-component exchange split, a highly dissociative, σ∗ resonance pulled down well below the ionization limit; and a complex valence-Rydberg high-energy part, including several resolved bands. Small structures are interpreted as correlation state satellites with leading internal or semi-internal configurations. Calculations using the restricted active space wave functions and quantum wave packet dynamics offer an overall excellent interpretation of the spectral features.</p>}}, author = {{Cornetta, Lucas M. and Kjellsson, Ludvig and Couto, Rafael C. and Ågren, Hans and Carravetta, Vincenzo and Sörensen, Stacey L. and Kubin, Markus and Bülow, Christine and Zamudio-Bayer, Vicente and Von Issendorff, Bernd and Lau, J. Tobias and Söderström, Johan and Agåker, Marcus and Rubensson, Jan Erik and Lindblad, Rebecka}}, issn = {{2469-9926}}, language = {{eng}}, number = {{2}}, publisher = {{American Physical Society}}, series = {{Physical Review A}}, title = {{X-ray-absorption spectrum of O2+}}, url = {{http://dx.doi.org/10.1103/PhysRevA.111.022808}}, doi = {{10.1103/PhysRevA.111.022808}}, volume = {{111}}, year = {{2025}}, }