Observation of direct dissociative ionization in molecular hydrogen
Direct dissociative ionization is the simplest three-body breakup process in H2. We describe the experimental verification of direct dissociative ionization to the repulsive A2S+u state by resolving the kinetic energy and angular distributions of the formed protons. A (2 + 1) resonant enhanced multiphoton ionization process via the isotropic E, F1S+g(v = 6, J = 0) level is employed. The structure in the kinetic energy spectrum is well described by a projection of the vibrational wave function of the E, F1S+g(v = 6, J = 0) state onto the repulsive ionic state. The electronic character of the ionization continuum is revealed by the proton angular distribution.
|Journal||Phys. Rev. Lett.|
Bakker, B. L. G, Parker, D. H, & van der Zande, W. J. (2001). Observation of direct dissociative ionization in molecular hydrogen. Phys.Rev.Lett., 86, 3272–3275.