Ionic excitation in low-energy charge-transfer collisions between He/sub 2/ /sup +/ and some diatomic molecules

Journal Article · Sat May 01 00:00:00 EDT 1976 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.13.1734· OSTI ID:7194883

Bearman, G H; Earl, J D; Pieper, R J; Harris, H H; Leventhal, J J

Absolute excitation cross sections for charge transfer in 11-eV (lab) collisions between He/sub 2/ /sup +/ ions and N/sub 2/, CO, O/sub 2/, and NO molecules have been determined by observing photons from the decay of excited ions formed in the collisions. The magnitudes of these cross sections are unusually large (greater than 10/sup -16/ cm/sup 2/) when the electron exchange process is resonant or nearly resonant. Vibrational state distributions of the product ions were also determined to be consistent with a vertical transition (Franck-Condon) model. Explanations for the large cross sections and observed state distributions are proposed. (AIP)

• Research Organization: University of Missouri: St. Louis, St. Louis, Missouri 63121
• OSTI ID: 7194883
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 13:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARGE EXCHANGE
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EV RANGE 10-100
EXCITATION
EXCITED STATES
FLUIDS
HELIUM IONS
ION COLLISIONS
ION-MOLECULE COLLISIONS
MOLECULE COLLISIONS
NITROGEN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
VIBRATIONAL STATES