Electronic excitation spectra and energy losses of slow ions in solids

Journal Article · Wed Feb 01 04:00:00 EST 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.1999· OSTI ID:6434662

Falcone, G; Sroubek, Z

We have calculated the energy distribution P(epsilon-c) of electrons excited by a slowly moving atomic particle in a metal. The particle is represented by an empirical pseudopotential which is known from electronic band structure calculations. The first moment of P(epsilon-c) yields the value of the total energy of excited electrons or, equivalently, the value of the energy losses of the moving particle. The electronic stopping power of Al atoms moving in aluminum calculated by this method is in quantitative agreement with the stopping power obtained by other approaches. The corrections to P(epsilon-c) due to the deviation of real metals from the free-electron model are also estimated. P(epsilon-c) can be used in theories of ion-induced kinetic electron and ion emissions as a source function for calculating the energy spectra of electrons excited in collision cascades.

• Research Organization: Dipartimento di Fisica, Universita degli Studi della Calabria, I-87036 Arcavacata di Rende (Cosenza), Italy
• OSTI ID: 6434662
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:4; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM
ATOM TRANSPORT
CHARGED PARTICLES
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LOSSES
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
IONS
LEPTONS
LOSSES
METALS
NEUTRAL-PARTICLE TRANSPORT
RADIATION TRANSPORT
SPECTRA
STOPPING POWER