Multiple ionization of noble gases by fully stripped ions

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.26.1962· OSTI ID:6421721

Haugen, H K; Andersen, L H; Hvelplund, P; Knudsen, H

Absolute partial-ionization cross sections have been determined for inelastic interactions involving fully stripped atomic projectiles and noble-gas atoms. For helium bombarded with stripped H, He, Li, B, C, and O at reduced energies of 1.44 and 2.3 MeV/amu, the ratio of cross sections for double and single ionization R = sigma/sub i/2/sigma/sub i/1 shows a strong dependence on the incident projectile charge. Furthermore, striking differences between results for equivelocity electrons and protons are observed, the ratio of double-to-single ionization by electron impact (approx.2 MeV/amu) is almost a factor of 2 greater than that for proton impact, and the ratios for both particles converge only for reduced energies approx.10 MeV/amu. For neon targets, a similar strong charge-state dependence for incident, bare nuclei is observed, while the electron-proton discrepancy is considerably less. In contrast, the heavier noble gases all show a considerably weaker dependence of the cross-section ratio on the incident charge state.

• Research Organization: Institute of Physics, University of Aarhus, DK-8000 Aarhus C, Denmark
• OSTI ID: 6421721
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 26:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
BORON IONS
CARBON IONS
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
HELIUM
HELIUM IONS
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONIZED GASES
IONS
KRYPTON
LITHIUM IONS
MEV RANGE
MEV RANGE 01-10
NEON
NONMETALS
OXYGEN IONS
RARE GASES
WEAKLY IONIZED GASES
XENON