The multielectron character of the S 2p → 4eg shape resonance in the SF6 molecule studied via detection of soft X-ray emission and neutral high-Rydberg fragments
(2016) In Journal of Electron Spectroscopy and Related Phenomena 209. p.26-33- Abstract
We have studied the nature of the S 2p → 4eg shape resonance in the SF6 molecule by performing two different experiments. Soft X-ray emission spectra measured at the 4eg shape resonance reveal features that do not originate from the S 2p-1 states. One of the features can be assigned to the 6a1g → S 2p transition. The 6a1g orbital, which is empty in the molecular ground state, can be populated either in core-valence double excitations or in S 2p shake-up transitions. Both these channels are considered. We have also studied the fragmentation of SF6 molecule after the decay of the S 2p core-hole states by observing neutral fragments in high-Rydberg states, where... (More)
We have studied the nature of the S 2p → 4eg shape resonance in the SF6 molecule by performing two different experiments. Soft X-ray emission spectra measured at the 4eg shape resonance reveal features that do not originate from the S 2p-1 states. One of the features can be assigned to the 6a1g → S 2p transition. The 6a1g orbital, which is empty in the molecular ground state, can be populated either in core-valence double excitations or in S 2p shake-up transitions. Both these channels are considered. We have also studied the fragmentation of SF6 molecule after the decay of the S 2p core-hole states by observing neutral fragments in high-Rydberg states, where an electron occupies an orbital with n ≥ 20 (n is the principal quantum number). Such neutral fragments become, in relative terms, more abundant at the S 2p → 4eg shape resonance with respect to the S 2p → 2t2g shape resonance, which is a pure one-electron phenomenon.
(Less)
- author
- Kivimäki, A. LU ; Coreno, M. ; Miotti, P. ; Frassetto, F. ; Poletto, L. ; Stråhlman, C. LU ; De Simone, M. and Richter, R.
- organization
- publishing date
- 2016-05-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Double excitations, High-Rydberg states, SF, Shake-up transitions, Shape resonance, Soft X-ray emission
- in
- Journal of Electron Spectroscopy and Related Phenomena
- volume
- 209
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- wos:000376547100004
- scopus:84962144485
- ISSN
- 0368-2048
- DOI
- 10.1016/j.elspec.2016.03.002
- language
- English
- LU publication?
- yes
- id
- 7601f2d9-9a28-4169-a873-dbed8731550d
- date added to LUP
- 2016-05-10 09:25:03
- date last changed
- 2025-01-12 02:08:00
@article{7601f2d9-9a28-4169-a873-dbed8731550d, abstract = {{<p>We have studied the nature of the S 2p → 4e<sub>g</sub> shape resonance in the SF<sub>6</sub> molecule by performing two different experiments. Soft X-ray emission spectra measured at the 4e<sub>g</sub> shape resonance reveal features that do not originate from the S 2p<sup>-1</sup> states. One of the features can be assigned to the 6a<sub>1g</sub> → S 2p transition. The 6a<sub>1g</sub> orbital, which is empty in the molecular ground state, can be populated either in core-valence double excitations or in S 2p shake-up transitions. Both these channels are considered. We have also studied the fragmentation of SF<sub>6</sub> molecule after the decay of the S 2p core-hole states by observing neutral fragments in high-Rydberg states, where an electron occupies an orbital with n ≥ 20 (n is the principal quantum number). Such neutral fragments become, in relative terms, more abundant at the S 2p → 4e<sub>g</sub> shape resonance with respect to the S 2p → 2t<sub>2g</sub> shape resonance, which is a pure one-electron phenomenon.</p>}}, author = {{Kivimäki, A. and Coreno, M. and Miotti, P. and Frassetto, F. and Poletto, L. and Stråhlman, C. and De Simone, M. and Richter, R.}}, issn = {{0368-2048}}, keywords = {{Double excitations; High-Rydberg states; SF; Shake-up transitions; Shape resonance; Soft X-ray emission}}, language = {{eng}}, month = {{05}}, pages = {{26--33}}, publisher = {{Elsevier}}, series = {{Journal of Electron Spectroscopy and Related Phenomena}}, title = {{The multielectron character of the S 2p → 4e<sub>g</sub> shape resonance in the SF<sub>6</sub> molecule studied via detection of soft X-ray emission and neutral high-Rydberg fragments}}, url = {{http://dx.doi.org/10.1016/j.elspec.2016.03.002}}, doi = {{10.1016/j.elspec.2016.03.002}}, volume = {{209}}, year = {{2016}}, }