Study of the dissociation of nitrous oxide following resonant excitation of the nitrogen and oxygen K-shells
- Department of Synchrotron Radiation Research, Institute of Physics, University of Lund, P.O. Box 118, SE-221 00 Lund (Sweden) and Department of Physics, Uppsala University, P.O. Box 530, SE-75121 Uppsala (Sweden)
A photochemistry study on nitrous oxide making use of site-selective excitation of terminal nitrogen, central nitrogen, and oxygen 1s{yields}3{pi} excitations is presented. The resonant Auger decay which takes place following excitation can lead to dissociation of the N{sub 2}O{sup +} ion. To elucidate the nuclear dynamics, energy-resolved Auger electrons were detected in coincidence with the ionic dissociation products, and a strong dependence of the fragmentation pathways on the core-hole site was observed in the binding energy region of the first satellite states. A description based on the molecular orbitals as well as the correlation between the thermodynamical thresholds of ion formation and the first electronic states of N{sub 2}O{sup +} has been used to qualitatively explain the observed fragmentation patterns.
- OSTI ID:
- 21024636
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 2 Vol. 128; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mass Spectra and Metastable Transitions in Isotopic Nitrous Oxides
Field ionization of high-Rydberg fragments produced after inner-shell photoexcitation and photoionization of the methane molecule