Transport cross sections based on a screened interaction potential: Comparison of classical and quantum-mechanical results

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.062902· OSTI ID:20717928

Vincent, R ^[1]; Juaristi, J I ^[2]; Nagy, I ^[3]

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1. Donostia International Physics Center DIPC, P. Manuel de Lardizabal 4, 20018 San Sebastian (Spain)
2. Departamento de Fisica de Materiales, Facultad de Quimicas UPV/EHU, Apartado 1072, 20080 San Sebastian (Spain)
3. Department of Theoretical Physics, Institute of Physics, Technical University of Budapest, H-1521 Budapest (Hungary)

Standard classical and quantum-mechanical methods are used to characterize the momentum-transfer cross section needed in energy-loss calculations and simulations for heavy, swift charges moving in an electron gas. By applying a well-known, finite-range screened Coulombic potential energy to model the two-body collision, the quantitative applicability range of the classical cross section is investigated as a function of charge (Z), screening length (R), and scattering relative velocity (v). The a posteriori condition (Z/R)/v{sup 2}<1, as an upper bound for heavy charges, is deduced for this applicability range from the comparative study performed.

• OSTI ID: 20717928
• Journal Information: Physical Review. A, Vol. 71, Issue 6; Other Information: DOI: 10.1103/PhysRevA.71.062902; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
COMPARATIVE EVALUATIONS
COULOMB FIELD
ELECTRON GAS
ENERGY LOSSES
MOMENTUM TRANSFER
POTENTIAL ENERGY
POTENTIALS
QUANTUM MECHANICS
SCATTERING
SIMULATION
TWO-BODY PROBLEM