Generation of H sup minus , H sub 2 (v double prime ), and H atoms by H sub 2 sup + and H sub 3 sup + ions incident upon barium surfaces
Conference
·
OSTI ID:5178224
The generation of vibrationally excited molecules by electron excitation collisions and the subsequent generation of negative ions by dissociative attachment to these molecules has become a standard model for volume source operation. These processes have been supplemented recently by the demonstration of atom-surface recombination to form vibrationally excited molecules, and enhanced negative ion formation by protons incident upon barium electrodes. In this paper we consider the additional processes of molecular vibrational excitation generated by recombination of molecular ions on the electrode surfaces, and negative ion formation by vibrationally excited molecules rebounding from low work-function electrodes. 10 refs., 4 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5178224
- Report Number(s):
- UCRL-102087; CONF-891055--3; ON: DE90005549
- Country of Publication:
- United States
- Language:
- English
Similar Records
Generation of H sup minus , H sub 2 ( v double prime ), and H atoms by H sub 2 sup + and H sub 3 sup + ions incident upon barium surfaces
Generation of H sup minus ions in negative ion sources via recombination of H sub 2 sup + and H sub 3 sup + ions incident upon cesium and barium surfaces
Recombination and dissociation of H sub 2 sup + and H sub 3 sup + ions on surfaces to form H sub 2 ( v double prime ): Negative-ion formation on low-work-function surfaces
Conference
·
Sun Aug 05 00:00:00 EDT 1990
· AIP Conference Proceedings (American Institute of Physics); (USA)
·
OSTI ID:5907242
Generation of H sup minus ions in negative ion sources via recombination of H sub 2 sup + and H sub 3 sup + ions incident upon cesium and barium surfaces
Conference
·
Mon Aug 13 00:00:00 EDT 1990
·
OSTI ID:6616972
Recombination and dissociation of H sub 2 sup + and H sub 3 sup + ions on surfaces to form H sub 2 ( v double prime ): Negative-ion formation on low-work-function surfaces
Journal Article
·
Fri Jun 01 00:00:00 EDT 1990
· Journal of Applied Physics; (USA)
·
OSTI ID:6807398
Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
BARIUM
BEAMS
CHARGED PARTICLES
COLLISIONS
DISSOCIATION
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
HYDROGEN IONS
ION BEAMS
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
METALS
MOLECULE COLLISIONS
RECOMBINATION
SURFACES
VIBRATIONAL STATES
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
BARIUM
BEAMS
CHARGED PARTICLES
COLLISIONS
DISSOCIATION
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
HYDROGEN IONS
ION BEAMS
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
METALS
MOLECULE COLLISIONS
RECOMBINATION
SURFACES
VIBRATIONAL STATES