Study of the dissociation of nitrous oxide following resonant excitation of the nitrogen and oxygen K-shells.
A photochemistry study on nitrous oxide making use of site-selective excitation of terminal nitrogen, central nitrogen, and oxygen 1s-->3pi excitations is presented. The resonant Auger decay which takes place following excitation can lead to dissociation of the N2O+ 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 N2O+ has been used to qualitatively explain the observed fragmentation patterns.
Céolin
D
D
Department of Synchrotron Radiation Research, Institute of Physics, University of Lund, P.O. Box 118, SE-221 00 Lund, Sweden. denis.ceolin@sljus.lu.se
Travnikova
O
O
Bao
Z
Z
Piancastelli
M N
MN
Tanaka
T
T
Hoshino
M
M
Kato
H
H
Tanaka
H
H
Harries
J R
JR
Tamenori
Y
Y
Prümper
C
C
Lischke
T
T
Liu
X-J
XJ
Ueda
K
K