Collisional ionization and excitation of H sub 2 : Dependence on the orientation of the internuclear axis
- Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602 (United States)
- Department of Chemistry and Physics, Augusta College, Augusta, Georgia 30910 (United States)
The cross sections for the double ionization, ionization plus excitation, and double excitation of H{sub 2} by protons and electrons have been measured as a function of the angle between the internuclear axis of the target and the projectile-beam direction. Measurements are reported for angles ranging from 18{degree} to 90{degree} and projectile-beam energies of 0.75, 1.0, and 2.0 MeV/amu. Simple model calculations predict a different angular dependence depending on whether the final configuration of a particular reaction channel is or is not dipole allowed. Comparison is made between prediction and measurement. For both electron and proton projectiles, the sum of the yield in all channels follows the form corresponding to a dipole-allowed final state. Some individual channels do not.
- OSTI ID:
- 6997413
- Journal Information:
- Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 46:11; ISSN PLRAA; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
BARYONS
COLLISIONS
CROSS SECTIONS
DATA
DISTANCE
DISTRIBUTION
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FERMIONS
HADRONS
HYDROGEN
INFORMATION
INTERATOMIC DISTANCES
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONIZATION
MOLECULE COLLISIONS
NONMETALS
NUCLEONS
NUMERICAL DATA
ORIENTATION
PROJECTILES
PROTONS