QUASI-ISOTROPIC FRAGMENTATION OF PF_5 FOLLOWING P 2p PHOTOABSORPTION

K. Ueda$^\ast$, Y. Muramatsu$^\ast$, Y. Shimizu$^\ast$, 
H. Chiba$^\ast$, Y. Sato$^\ast$, M. Kitajima$^\dagger$, 
H. Tanaka$^\dagger$ and H. Nakamatsu$^\ddagger$ 

$^\ast$Research Institute for Scientific Measurements,
Tohoku University, Sendai 980-8577, Japan 
$^\dagger$Department of Physics, Sophia University,
Tokyo 102-8554, Japan 
$^\ddagger$Institute for Chemical Research, Kyoto University, 
Uji, Kyoto 611-0011, Japan

The nearly isotropic ionic photofragmentation of a D_{3h} symmetry 
molecule PF_5 observed in the P 2p innershell excitation region 
is interpreted with a help of the first principles calculation of 
the symmetry-resolved P 2p absorption spectra.