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Resonant ion pair formation in electron collisions with ground state molecular ions

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Zong, W Dunn, GH Djuric, N Larsson, M. Greene, CH Ugglas, MA

Resonant ion pair formation from collisions of electrons with ground state diatomic molecular ions has been observed and absolute cross sections measured. The cross section for HD+ is characterized by an abrupt threshold at 1.9 eV and 14 resolved peaks in the range of energies 0 less than or equal to E less than or equal to 14 eV. The dominant mechanism responsible fbr the structures appears to be resonant capture and stabilization, modified by two-channel quantum interference. Data on HF+ show structure correlated with photoionization of HF and with dissociative recombination of electrons with this ion.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 1999
Language Anglais
Journal information "Physical Review Letters" - Vol. 83, no. 5, p. 951-954 (1999)
Peer reviewed yes
Publisher American Physical Soc (College Pk)
issn 0031-9007
e-issn 1079-7114
Publication status Publié
Affiliation UCL
Links
  1. Zajfman D., Amitay Z., Lange M., Hechtfischer U., Knoll L., Schwalm D., Wester R., Wolf A., Urbain X., Curve Crossing and Branching Ratios in the Dissociative Recombination ofHD+, 10.1103/physrevlett.79.1829
  2. Chupka W. A., Dehmer P. M., Jivery W. T., High resolution photoionization study of ion-pair formation in H2, HD, and D2 , 10.1063/1.431833
  3. Berkowitz J., Chupka W. A., Guyon P. M., Holloway J. H., Spohr R., Photoionization Mass Spectrometric Study of F2, HF, and DF, 10.1063/1.1674811
  4. L. G. Christophorou, Electron-Molecule Interactions and their Applications, (1984)
  5. Poulaert G, Brouillard F, Claeys W, McGowan J W, Wassenhove G Van, H2+formation in low energy H+-H-collisions, 10.1088/0022-3700/11/21/006
  6. Urbain X., Cornet A., Brouillard F., Giusti-Suzor A., Dynamics of an elementary bond-forming process: Associative ionization in H(1s)+H(2s) collisions, 10.1103/physrevlett.66.1685
  7. Peart B, Dolder K T, Collisions between electrons and H2+ions VI. Measurements of cross sections for the simultaneous production of H+and H-, 10.1088/0022-3700/8/9/023
  8. Peart B, Forrest R A, Dolder K, Measured cross sections for the formation of H-by collisions between H3+ions and electrons, 10.1088/0022-3700/12/20/021
  9. Yousif F B, Donk P Van Der, Mitchell J B A, Ion-pair formation in the dissociative recombination of H3+, 10.1088/0953-4075/26/22/027
  10. G. V. Dubrovskii, Theo. Exp. Chem., 2, 715 (1966)
  11. Strömholm C., Semaniak J., Rosén S., Danared H., Datz S., van der Zande W., Larsson M., Dissociative recombination and dissociative excitation ofHeH+4: Absolute cross sections and mechanisms, 10.1103/physreva.54.3086
  12. Greene Chris H., Yoo Byungduk, Doubly-Excited States in the Spectrum of Molecular Hydrogen, 10.1021/j100006a012
  13. Rosenthal H., Nonadiabatic Effects in Slow Atomic Collisions. I.He++ He, 10.1103/physreva.4.1030
  14. Tolk N. H., Tully J. C., White C. W., Kraus J., Monge A. A., Neff S. H., Quasimolecular States Responsible for Quantum-Mechanical Phase Interference in Low-EnergyNa+-Ne Inelastic Collisions, 10.1103/physrevlett.35.1175
  15. Tolk N. H., White C. W., Neff S. H., Lichten W., Strong Optical Polarization Effects in Radiation from Low-EnergyNa+-Ne Collisions, 10.1103/physrevlett.31.671
  16. Dworetsky S., Novick R., Smith W. W., Tolk N., Gross Failure of the Conventional Adiabatic Criterion; Structure and Coherence in the Low-Energy Excitation of Helium Atoms by Helium Ions, 10.1103/physrevlett.18.939
Bibliographic reference Zong, W ; Dunn, GH ; Djuric, N ; Larsson, M. ; Greene, CH ; et. al. Resonant ion pair formation in electron collisions with ground state molecular ions. In: Physical Review Letters, Vol. 83, no. 5, p. 951-954 (1999)
Permanent URL http://hdl.handle.net/2078.1/44255