Kinetic energy distributions in the fragmentations of metastable H2S, HDS and D2S ions

摘要: Abstract The distribution of kinetic energy release associated with H2 loss from metastable H2S+− ions has been measured in the coordinate system moving velocity center mass and compared those for analogous reaction HDS+− D2S+−. distributions have similar forms but are displaced relative to one another by amounts which correspond differences zero point energies respective products. results agreement occurrence fragmentation slow spin-forbidden predissociation involving a transition 2A1 state repulsive 4A2 state. similarities seem rule out tunnelling as contributor curve crossing process. also allow estimation classical point.