Internal inelastic scattering satellite probed by molecular-frame photoelectron angular distributions from CO2.
The molecular-frame photoelectron angular distribution (MFPAD) of the satellite accompanying the C 1s photoline of the CO2 molecule has been measured at the C 1s(2sigmag)-->4sigmau* shape resonance, using electron-ion multicoincidence momentum spectroscopy. The observed MFPAD indicates that the conjugate satellite is excited by internal inelastic scattering. In this scenario, a photoelectron is ejected from the C 1s(2sigmag) orbital along the molecular axis and collides with an O lone-pair electron in the highest occupied molecular orbital 1pig. Then one of the colliding electrons is trapped to the lowest unoccupied molecular orbital 2piu*, while the other is emitted as a satellite photoelectron of sigmag symmetry, losing the information of the original photoelectron emission direction and parity.
Liu
X-J
XJ
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.
Fukuzawa
H
H
Teranishi
T
T
De Fanis
A
A
Takahashi
M
M
Yoshida
H
H
Cassimi
A
A
Czasch
A
A
Schmidt
L
L
Dörner
R
R
Koyano
I
I
Saito
N
N
Ueda
K
K