Double ionization of helium by bare ions: Theoretical study of the fully differential cross sections

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.062702· OSTI ID:21550106

Lopez, S D; Garibotti, C R ^[1]; Otranto, S ^[2]

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1. Consejo Nacional de Investigaciones Cientificas y Tecnicas and Centro Atomico Bariloche, Avenida Bustillo 9400, 8400 San Carlos de Bariloche (Argentina)
2. Instituto de Fisica del Sur and Departamento de Fisica, Universidad Nacional del Sur, 8000 Bahia Blanca (Argentina)

This work presents a theoretical study of fully differential cross sections (FDCSs) for the double ionization of an He target by ion impact within a distorted wave model. The initial atomic system is described by two approximated wave functions of different accuracy proposed by Bonham and Kohl. For the final channel several models are considered based upon improvements and simplifications of the well-known three-body Coulomb (3C) model. The influence of the receding projectile on the resulting fragments is also studied by implementing a model with effective charges that depend on the momenta of the four particles. The FDCSs resulting for different electron energy sharing are discussed. The sensitivity of the FDCSs to the projectile charge sign and magnitude is explored over the energy range 700 keV/amu through 6 MeV/amu.

• OSTI ID: 21550106
• Journal Information: Physical Review. A, Vol. 83, Issue 6; Other Information: DOI: 10.1103/PhysRevA.83.062702; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ACCURACY
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
EFFECTIVE CHARGE
ELECTRONS
FOUR MOMENTUM TRANSFER
HELIUM
IONIZATION
IONS
KEV RANGE
MEV RANGE
THREE-BODY PROBLEM
WAVE FUNCTIONS
CHARGED PARTICLES
CROSS SECTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FLUIDS
FUNCTIONS
GASES
LEPTONS
MANY-BODY PROBLEM
MOMENTUM TRANSFER
NONMETALS
RARE GASES