Attenuation and single electron charge-exchange cross sections of He/sup +/ on Ne and Ar in the 500--5000 eV energy range

Journal Article · Tue Feb 01 00:00:00 EST 1977 · J. Chem. Phys.; (United States)

OSTI ID:7335939

Eisele, F L; Nagy, S W

The absolute total charge-exchange cross sections of He/sup +/ on Ne and He/sup +/ or Ar have been measured using a parallel plate target ion collection method. The first set of collision partners have large but similar ionization potentials and the resulting cross sections agree reasonably well with theory. He/sup +/ on Ar collisions appear more complex, involving many interacting states. The resulting cross section does not show good agreement with existing two-state theory. In addition, a lower limit to the total collision cross section of these same two collisions has been determined via incident beam attenuation measurements. For each of these collisions, the cross section was found to decrease monotonically with increasing ion velocity. In the He/sup +/ on Ar collision, the measured total and charge-exchange cross sections were observed to coincide at energies above 3 keV. (AIP)

• Research Organization: Department of Physics, University of Vermont, Burlington, Vermont 05401
• OSTI ID: 7335939
• Journal Information: J. Chem. Phys.; (United States), Vol. 66:3
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ION-ATOM COLLISIONS
HELIUM IONS
CHARGE EXCHANGE
NEON
EV RANGE 100-1000
ION BEAMS
KEV RANGE 01-10
TOTAL CROSS SECTIONS
ATOM COLLISIONS
BEAMS
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
EV RANGE
ION COLLISIONS
KEV RANGE
NONMETALS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena