Electronic-state interference in the C 1s excitation and decay of methyl chloride studied by angularly resolved Auger spectroscopy
(2017) In Physical Review A 96(5).- Abstract
Resonant Auger (RA) decay spectra of carbon 1s excited CH3Cl molecules are recorded with angular resolution using linearly polarized synchrotron radiation. The selected photon energies corresponding to the C 1s→8a1 core to lowest unoccupied molecular orbital and C 1s→4sa1, 4pe, and 4pa1 core to Rydberg excitations of methyl chloride are used and electrons in the binding energy range of 11-37 eV are detected. The vibrationally unresolved RA electron angular distributions, recorded for participator Auger transitions populating the X, A, B, and C states of the CH3Cl+ ion, exhibit strong variations across the selected electronic resonances. These observations are interpreted with the help of ab initio electronic structure and dynamics... (More)
Resonant Auger (RA) decay spectra of carbon 1s excited CH3Cl molecules are recorded with angular resolution using linearly polarized synchrotron radiation. The selected photon energies corresponding to the C 1s→8a1 core to lowest unoccupied molecular orbital and C 1s→4sa1, 4pe, and 4pa1 core to Rydberg excitations of methyl chloride are used and electrons in the binding energy range of 11-37 eV are detected. The vibrationally unresolved RA electron angular distributions, recorded for participator Auger transitions populating the X, A, B, and C states of the CH3Cl+ ion, exhibit strong variations across the selected electronic resonances. These observations are interpreted with the help of ab initio electronic structure and dynamics calculations, which account for electronic-state interference between the direct and different resonant ionization pathways. For spectator transitions, the theory predicts almost isotropic angular distributions with moderate changes of β parameters around zero, which is in agreement with the experimental observations.
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- author
- Nandi, S. LU ; Nicolas, C. ; Artemyev, A. N. ; Novikovskiy, N. M. ; Miron, C. ; Bozek, John D. and Demekhin, Ph V.
- organization
- publishing date
- 2017-11-03
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review A
- volume
- 96
- issue
- 5
- article number
- 052501
- publisher
- American Physical Society
- external identifiers
-
- scopus:85033549844
- ISSN
- 2469-9926
- DOI
- 10.1103/PhysRevA.96.052501
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: We thank E. Robert for technical assistance and the SOLEIL staff for the stable operation of the equipment and the storage ring during the experiments (Proposal No. 20151032). S.N. would like to acknowledge fruitful discussions with M. Patanen during the initial stage of the data analysis. We also thank I. D. Petrov for many valuable discussions. Financial support from the Deutsche Forschungsgemeinschaft (Project No. DE 2366/1-1) and the Russian Foundation for Basic Research (Grant No. 16-03-00771a) is gratefully acknowledged. P.V.D. acknowledges Research Institute of Physics, Southern Federal University for the hospitality during his research stay there. Publisher Copyright: © 2017 American Physical Society.
- id
- afe88f6f-997d-427c-9780-138346aaa6a1
- date added to LUP
- 2022-03-31 13:22:44
- date last changed
- 2022-07-05 15:45:13
@article{afe88f6f-997d-427c-9780-138346aaa6a1,
abstract = {{<p>Resonant Auger (RA) decay spectra of carbon 1s excited CH3Cl molecules are recorded with angular resolution using linearly polarized synchrotron radiation. The selected photon energies corresponding to the C 1s→8a1 core to lowest unoccupied molecular orbital and C 1s→4sa1, 4pe, and 4pa1 core to Rydberg excitations of methyl chloride are used and electrons in the binding energy range of 11-37 eV are detected. The vibrationally unresolved RA electron angular distributions, recorded for participator Auger transitions populating the X, A, B, and C states of the CH3Cl+ ion, exhibit strong variations across the selected electronic resonances. These observations are interpreted with the help of ab initio electronic structure and dynamics calculations, which account for electronic-state interference between the direct and different resonant ionization pathways. For spectator transitions, the theory predicts almost isotropic angular distributions with moderate changes of β parameters around zero, which is in agreement with the experimental observations.</p>}},
author = {{Nandi, S. and Nicolas, C. and Artemyev, A. N. and Novikovskiy, N. M. and Miron, C. and Bozek, John D. and Demekhin, Ph V.}},
issn = {{2469-9926}},
language = {{eng}},
month = {{11}},
number = {{5}},
publisher = {{American Physical Society}},
series = {{Physical Review A}},
title = {{Electronic-state interference in the C 1s excitation and decay of methyl chloride studied by angularly resolved Auger spectroscopy}},
url = {{http://dx.doi.org/10.1103/PhysRevA.96.052501}},
doi = {{10.1103/PhysRevA.96.052501}},
volume = {{96}},
year = {{2017}},
}