Back to Search
Start Over
Occupied and unoccupied electronic structures of an L-cysteine film studied by core-absorption and resonant photoelectron spectroscopies.
- Source :
-
AIP Advances . 2016, Vol. 6 Issue 4, p1-10. 10p. - Publication Year :
- 2016
-
Abstract
- Unoccupied and occupied electronic structures of an L-cysteine film have been studied by absorption and resonant photoelectron spectroscopies. Core absorptions at S-L, C-K, N-K, and O-K levels indicate that the lower unoccupied states are predominantly composed of oxygen-2p, carbon-2p, and sulfur-4s+3d orbitals, while higher unoccupied states may be attributed dominantly to nitrogen-np (n ≥ 3), oxygen-np (n ≥ 3), and sulfur-ns+md (n ≥ 4, m ≥ 3) orbitals. Resonant photoelectron spectra at S-L23 and O-K levels indicate that the highest occupied state is originated from sulfur-3sp orbitals, while oxygen-2sp orbitals contribute to the deeper valence states. The delocalization lifetimes of the oxygen-1s and sulfur-2p excited states are estimated from a core-hole clock method to be about 9 ± 1 and 125 ± 25 fs, respectively. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CYSTEINE
*THIN film research
*PHOTOELECTRON spectroscopy
Subjects
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 6
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 115074174
- Full Text :
- https://doi.org/10.1063/1.4947072