Fully differential cross sections for photo-double-ionization of D2.
We report the first kinematically complete study of the four-body fragmentation of the D2 molecule following absorption of a single photon. For equal energy sharing of the two electrons and a photon energy of 75.5 eV, we observed the relaxation of one of the selection rules valid for He photo-double-ionization and a strong dependence of the electron angular distribution on the orientation of the molecular axis. This effect is reproduced by a model in which a pair of photoionization amplitudes is introduced for the light polarization parallel and perpendicular to the molecular axis.
Weber
Th
T
Institut für Kernphysik, Universität Frankfurt, D 60486 Frankfurt, Germany.
Czasch
A
A
Jagutzki
O
O
Müller
A
A
Mergel
V
V
Kheifets
A
A
Feagin
J
J
Rotenberg
E
E
Meigs
G
G
Prior
M H
MH
Daveau
S
S
Landers
A L
AL
Cocke
C L
CL
Osipov
T
T
Schmidt-Böcking
H
H
Dörner
R
R