The dissociation of H2 in singly ionizing collisions with fast protons was analyzed using channel-selective low-energy electron spectra. Dissociative and nondissociative single ionization of H2 by 6MeV proton impact was described in a kinematically by determining momentum vectors of electron and H+ fragment of H2+ target ion, respectively. The electron spectra exhibited role of autoionization of doubly and singly excited states of H2. The doubly and singly excited states of H2 involve coupling between electronic and nuclear motion of molecule.
C. Dimopoulou and R. Moshammer and D. Fischer and C. Hohr and A. Dorn and P. D. Fainstein and J. R. Crespo Lopez-Urrutia and C. D. Schroter and H. Kollmus and R. Mann and S. Hagmann and J. H. Ullrich, "Breakup of H₂ in Singly Ionizing Collisions with Fast Protons: Channel-selective Low-energy Electron Spectra," Physical Review Letters, vol. 93, no. 12, pp. 123203-1 - 123203-4, American Physical Society (APS), Sep 2004.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.93.123203
Keywords and Phrases
Dissociation; Ground State; Hydrogen; Kinematics; Kinetic Energy; Mathematical Models; Molecular Dynamics; Molecular Vibrations; Probability; Protons; Spectrometers; Vectors; Born-Oppenheimer Approximation; Electron Spectra; Momentum Transfer; Ionization
International Standard Serial Number (ISSN)
Article - Journal
© 2004 American Physical Society (APS), All rights reserved.
01 Sep 2004