Stopping power of an electron gas for antiprotons at intermediate velocities

I. Nagy and P. M. Echenique
Phys. Rev. A 47, 3050 – Published 1 April 1993
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Abstract

The stopping power of antiprotons moving at energies up to 400 keV through a uniform zero-temperature electron gas is calculated within the framework of the kinetic theory. The momentum-transfer cross section required is determined with the aid of a parametric velocity-dependent scattering potential. A nonperturbative constraint, provided by the nuclear-cusp condition, is used to fix the parameter value. A comparison with the result of a quadratic-response-function approach is made. The calculated stopping powers are in good agreement with recent experimental predictions.

  • Received 16 January 1992

DOI:https://doi.org/10.1103/PhysRevA.47.3050

©1993 American Physical Society

Authors & Affiliations

I. Nagy

  • Quantum Theory Group, Institute of Physics, Technical University of Budapest, H-1521 Budapest, Hungary

P. M. Echenique

  • Departamento de Fisica, Facultad de Quimica, Universidad del Pais Vasco, Apartado 1072, San Sebastian 20080, Spain

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Vol. 47, Iss. 4 — April 1993

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