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Postcollisional decay in Ne multiple ionization by H{sub 2}{sup +} ions in breakup collisions

Journal Article · · Physical Review. A
 [1]; ; ; ;  [2];  [3]; ;  [4]
  1. Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro 21941-972 (Brazil)
  2. Departamento de Fisica, Pontificia Universidade Catolica do Rio de Janeiro, Caixa Postal 38071, Rio de Janeiro 22452-970 (Brazil)
  3. Department of Physics, University of Missouri-Rolla, Rolla, Missouri 65401 (United States)
  4. Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland (United Kingdom)
+ Show Author Affiliations
We measured the Ne{sup q+} charge-state yield distribution for Ne atoms multiply ionized by 1-MeV/amu H{sub 2}{sup +}, in coincidence with the final state of the projectile, for both breakup and nonbreakup channels. Measurements with 1-MeV H{sup +} projectiles were also performed. While the H{sub 2}{sup +} nonbreakup channel produces results similar to equal-velocity proton or electron projectiles, the breakup channels lead to a charge-state yield distribution very close to the known Ne 2s{sup -1} postcollisional decay distribution, measured through photoionization [T. A. Carlson, W. E. Hunt, and M. O. Krause, Phys. Rev. 151, 41 (1966)]. This behavior suggests that, in the breakup channels, contributions to multiple ionization from mechanisms that are usually considered to be dominant in ion-atom collisions are less important than the postcollisional decay.
OSTI ID:
20640333
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 68; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English

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Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CHARGE STATES
DECAY
DISTRIBUTION
ELECTRONS
HYDROGEN IONS 1 PLUS
HYDROGEN IONS 2 PLUS
ION-ATOM COLLISIONS
MEV RANGE
NEON
PHOTOIONIZATION
PROTONS
YIELDS