ORIENTATION DEPENDENCE OF CO MOLECULE DISSOCIATION BY ELECTRON CAPTURE
COLLISION WITH 1 MEV C3+ ION

Yoichi Haruyama*, Manabu Saito*, Koji Yoshida$Bß
(B Akio Itoh$Bß
(Band Nobutsugu Ima
nishi$Bßí(B

*Laboratory of Applied Physics, Kyoto Prefectural University, Kyoto 606, Japan
$Bß%(Bepartment of Nuclear Engineering, Kyoto University, Kyoto 606, Japan

We have measured the position of the fragment of CO molecule dissociated by
single electron capture collision with 1.0 MeV C3+ ion and the time
difference between the first arrived fragment and the second one at the
same time.  We found that the dissociation probability of CO molecule into
C2+ and O+ ion pair shows clear molecular orientation dependence.  When
carbon atom of the molecule headed to the incident ion, the dissociation
yields are enhanced.