Electron correlations in single-electron capture from helium by fast protons and {alpha} particles

Journal Article · Mon Feb 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.022710· OSTI ID:21408236

Mancev, Ivan; Milojevic, Nenad ^[1]

---

1. Department of Physics, Faculty of Sciences and Mathematics, University of Nis, Post Office Box 224, 18000 Nis (Serbia)

Single-electron capture from heliumlike atomic systems by bare projectiles is investigated by means of the four-body boundary-corrected first Born approximation (CB1-4B). The effect of the dynamic electron correlation is explicitly taken into account through the complete perturbation potential. The quantum-mechanical post and prior transition amplitudes for single charge exchange encompassing symmetric and/or asymmetric collisions are derived in terms of two-dimensional real integrals in the case of the prior form and five-dimensional quadratures for the post form. An illustrative computation is performed for single-electron capture from helium by protons and {alpha} particles at intermediate and high impact energies. The role of dynamic correlations is examined as a function of increased projectile energy. The validity and utility of the proposed CB1-4B method is critically assessed in comparison with the existing experimental data for total cross sections, and excellent agreement is obtained.

• OSTI ID: 21408236
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALPHA PARTICLES
AMPLITUDES
APPROXIMATIONS
BARYONS
BORN APPROXIMATION
CALCULATION METHODS
CAPTURE
CHARGE EXCHANGE
CHARGED PARTICLES
COMPARATIVE EVALUATIONS
CORRELATIONS
CROSS SECTIONS
ELECTRON CAPTURE
ELECTRON CORRELATION
ELEMENTARY PARTICLES
ELEMENTS
EVALUATION
FERMIONS
FLUIDS
FOUR-BODY PROBLEM
GASES
HADRONS
HELIUM
INTEGRALS
IONIZING RADIATIONS
MANY-BODY PROBLEM
MECHANICS
NONMETALS
NUCLEONS
PERTURBATION THEORY
POTENTIALS
PROTONS
QUANTUM MECHANICS
RADIATIONS
RARE GASES
TOTAL CROSS SECTIONS
TRANSITION AMPLITUDES