Low-velocity antiproton stopping power

Journal Article · Fri Dec 15 04:00:00 EST 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.11983· OSTI ID:7265291

Nagy, I; Arnau, A; Echenique, P M ^[1]; Zaremba, E ^[2]

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1. Departamento de Fisica de Materiales, Universidad del Pais Vasco, Apartado 1072, San Sebastian 20080, Spain (Spain)
2. Department of Physics, Queen's University, Kingston, Ontario, Canada K7L 3N6 (Canada)

The stopping power of antiprotons moving at low velocities through a uniform electron gas is calculated by making use of the momentum-transfer cross section. The static screening potential required is obtained from a self-consistent nonlinear screening calculation within density-functional theory. Our results indicate that the corrections beyond linear-response theory are particularly significant for negatively charged particles. We obtain, for example, a ratio of about two for the proton and antiproton stopping powers throughout the metallic density range.

• OSTI ID: 7265291
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:17; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
BARYONS
CHARGED-PARTICLE TRANSPORT
CROSS SECTIONS
ELECTRON GAS
ELEMENTARY PARTICLES
FERMIONS
FLUIDS
FUNCTIONAL MODELS
GASES
HADRONS
MOMENTUM TRANSFER
NUCLEI
NUCLEONS
RADIATION TRANSPORT
SCREENING
STOPPING POWER