Photoelectron angular distributions from O K shell of oriented CO molecules: A critical comparison between theory and experiment
The dynamical information (ten dipole matrix elements and eight phase differences) has been deduced from the measured angular distributions of photoelectrons from O K shell of oriented CO molecules near the ionization threshold in the region of a sigma(*) shape resonance. Light polarization parallel and perpendicular to the molecular axis has been used. An important contribution of six lsigma partial waves with 0</=l</=5 to the sigma(*) shape resonance is demonstrated. A comparison with our calculations in the relaxed core Hartree-Fock approximation reveals only a qualitative agreement, therefore a more advanced theory is needed.
Ito
K
Photon Factory, Institute of Materials Structure Science, Oho 1-1, Tsukuba-shi, Ibaraki-ken 305-0801, Japan.
Adachi
J
Hikosaka
Y
Motoki
S
Soejima
K
Yagishita
A
Raseev
G
Cherepkov
NA