ANISOTROPIC FRAGMENTATION OF CF_4 FOLLOWING F 1s PHOTOABSORPTION

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

$^\ast$Research Institute for Scientific Measurements,
Tohoku University, Sendai 980-8577, Japan 
$^\dagger$Institute for Chemical Research, Kyoto University, 
Uji, Kyoto 611-0011, Japan

The anisotropic ionic photofragmentation of a T_d symmetry 
molecule CF_4 observed  in the C 1s innershell excitation 
region is interpreted with a help of the first principles 
calculation of the symmetry-resolved C 1s absorption spectra.