Accuracy of the classical trajectory Monte Carlo method for electron capture in Li{sup 3+} and Ne{sup 10+}+H(1s) collisions

Journal Article · Mon Nov 01 04:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.052713· OSTI ID:20646227

Errea, L F; Illescas, Clara; Mendez, L; Riera, A; Suarez, J ^[1]; Pons, B ^[2]

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1. Laboratorio Asociado al CIEMAT de Fisica Atomica y Molecular en Plasmas de Fusion, Departamento de Quimica C-IX, Universidad Autonoma, 28049 Madrid (Spain)
2. Centre Lasers Intenses et Applications, UMR 5107 du CNRS, Universite de Bordeaux-I, 351 Cours de la Liberation, 33405 Talence (France)

The accuracy of classical trajectory Monte Carlo treatments of electron capture is studied, by focusing on collisions on H(1s) targets by Li{sup 3+} and Ne{sup 10+} projectiles, treated in a separate paper. We examine how the choice of the initial distribution, and the partition of phase space usually employed to calculate partial cross sections, influence the accuracy of the method. With respect to the former, an improvement over the single-microcanonical choice is advisable, but further refinements based on the electron density are not worthwhile. Regarding the latter, we illustrate the accuracy of the 'binning' method for n>2. We show that classical and semiclassical mechanisms are essentially the same, although at low velocities the method is unable to describe the fall of the cross section.

• OSTI ID: 20646227
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ACCURACY
ATOMS
CATIONS
CROSS SECTIONS
DISTRIBUTION
ELECTRON CAPTURE
ELECTRON DENSITY
FOCUSING
HYDROGEN
ION-ATOM COLLISIONS
IONIZATION
LITHIUM
LITHIUM IONS
MONTE CARLO METHOD
MULTICHARGED IONS
NEON
NEON IONS
PHASE SPACE
SEMICLASSICAL APPROXIMATION
VELOCITY