Probing doubly excited ionic states of N-2(+) via a triple excitation above the N 1s threshold in the N-2 molecule
(2003) In Physical Review A (Atomic, Molecular and Optical Physics) 67(3: 032504).- Abstract
- Angle-resolved resonant Auger-electron spectroscopy has been carried out on the nitrogen molecule at selected photon energies around 419 eV, where a 1s core electron and two valence electrons are promoted into the lowest unoccupied molecular orbital 1pi(g). Significant enhancement of a specific band, which cannot be disentangled in direct photoionization, is observed at a binding energy of 37.6 eV, with a value of the anisotropy parameter beta much smaller than 2. We assign this new band to the transition to a doubly excited cationic state of N-2, in which two of the excited valence electrons remain in the 1pi(g) orbital, proposing a "double spectator" type decay mechanism. This observation shows how to preferentially probe multiply... (More)
- Angle-resolved resonant Auger-electron spectroscopy has been carried out on the nitrogen molecule at selected photon energies around 419 eV, where a 1s core electron and two valence electrons are promoted into the lowest unoccupied molecular orbital 1pi(g). Significant enhancement of a specific band, which cannot be disentangled in direct photoionization, is observed at a binding energy of 37.6 eV, with a value of the anisotropy parameter beta much smaller than 2. We assign this new band to the transition to a doubly excited cationic state of N-2, in which two of the excited valence electrons remain in the 1pi(g) orbital, proposing a "double spectator" type decay mechanism. This observation shows how to preferentially probe multiply excited configurations of cations using multiple resonant excitation. (Less)
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- author
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review A (Atomic, Molecular and Optical Physics)
- volume
- 67
- issue
- 3: 032504
- article number
- 032504
- publisher
- American Physical Society
- external identifiers
-
- wos:000181965900040
- scopus:85037220848
- ISSN
- 1050-2947
- DOI
- 10.1103/PhysRevA.67.032504
- language
- English
- LU publication?
- yes
- id
- 3d7bfeb9-36dc-42f2-a166-ba9a433f76c3 (old id 313964)
- date added to LUP
- 2016-04-01 12:24:31
- date last changed
- 2022-02-18 22:05:59
@article{3d7bfeb9-36dc-42f2-a166-ba9a433f76c3,
abstract = {{Angle-resolved resonant Auger-electron spectroscopy has been carried out on the nitrogen molecule at selected photon energies around 419 eV, where a 1s core electron and two valence electrons are promoted into the lowest unoccupied molecular orbital 1pi(g). Significant enhancement of a specific band, which cannot be disentangled in direct photoionization, is observed at a binding energy of 37.6 eV, with a value of the anisotropy parameter beta much smaller than 2. We assign this new band to the transition to a doubly excited cationic state of N-2, in which two of the excited valence electrons remain in the 1pi(g) orbital, proposing a "double spectator" type decay mechanism. This observation shows how to preferentially probe multiply excited configurations of cations using multiple resonant excitation.}},
author = {{Feifel, R and Ueda, K and De Fanis, A and Okada, K and Tanimoto, S and Furuta, T and Shindo, H and Kitajima, M and Tanaka, H and Bjorneholm, O and Karlsson, L and Svensson, S and Ristinmaa Sörensen, Stacey}},
issn = {{1050-2947}},
language = {{eng}},
number = {{3: 032504}},
publisher = {{American Physical Society}},
series = {{Physical Review A (Atomic, Molecular and Optical Physics)}},
title = {{Probing doubly excited ionic states of N-2(+) via a triple excitation above the N 1s threshold in the N-2 molecule}},
url = {{http://dx.doi.org/10.1103/PhysRevA.67.032504}},
doi = {{10.1103/PhysRevA.67.032504}},
volume = {{67}},
year = {{2003}},
}