Role of angular momentum in unimolecular kinetics: Kinetic energy release in fragmentation of C4H6+

Abstract
The kinetic energy release distributions in the fragmentation C4H6+→C3H3++CH3 at selected energies are reported and are compared with the analogous distributions from ’’metastable’’ C4H6+ and from C2H2++C2H4 collision complexes. The data seem to reflect the role of angular momentum in the collision experiments, as predicted by the Langevin model of the quasiequilibrium theory.