Energy spectrum of protons produced in collisional dissociation of fast H2+ ions
- 1 September 1968
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 1 (5), 813-821
- https://doi.org/10.1088/0022-3700/1/5/307
Abstract
Energy distributions of protons produced in dissociative collisions of H2+ with H2, Ar and Xe have been measured in the forward direction at 10 keV. An experimental method giving the corresponding excess kinetic energy spectrum in the centre-of-mass system of H2+ is briefly discussed. The measured spectra are explained in terms of electronic and vibrational transitions to dissociative states of the H2+ molecular ion. The dissociation cross section by vibrational transitions in the 1sσg state is estimated to be, respectively, σv = 1.4 × 10-18 cm2, σv = 4.3 × 10-18 cm2 and σv = 5 × 10-18 cm2 for hydrogen, argon and xenon targets. The dependence upon the target density is interpreted as a double collision dissociation process of the type H2+ -> H20* -> H+. The influence of ion source parameters is also studied. Comparison is made with theory and the agreement is found to be good if one makes allowance for the dependence of dissociation upon the internuclear axis orientation.Keywords
This publication has 10 references indexed in Scilit:
- Collision-induced dissociation of 10 keV H2+ ionsPhysica, 1967
- Electron Impact Dissociation ofPhysical Review B, 1967
- Franck—Condon Factors for the Ionization of H2 and D2The Journal of Chemical Physics, 1966
- Dissociation vibrationnelle et dissociation en cascade d'ions H2+ par collisions avec les molécules d'un gazJournal de Physique et le Radium, 1966
- Differential Angular Distribution of H and Dissociation Fragments of Fast Ions Incident on GasPhysical Review B, 1965
- The Transition in Induced by Collision with an Electron, Proton, or Hydrogen AtomPhysical Review B, 1965
- Dissociation of Molecular Hydrogen Ions Enhanced by Ion-Source OperationPhysical Review B, 1965
- Dissociation of hydrogen molecular ions by fast protonsProceedings of the Physical Society, 1965
- Inelastic Scattering of Electrons by the Hydrogen Molecule IonPhysical Review B, 1964
- THE EFFECT OF VIBRATIONAL EXCITATION OF H2+ ON ITS COLLISION-INDUCED DISSOCIATIONCanadian Journal of Physics, 1964