Accession Number:

ADA063809

Title:

Quasiparticle Damping of a Positron in an Electron Gas.

Descriptive Note:

Technical rept.,

Corporate Author:

CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF PHYSICS

Personal Author(s):

• Oliva,Joe

Report Date:

1978-11-01

Pagination or Media Count:

44.0

Abstract:

We present a calculation of the imaginary part of the self energy Sigma sub 1 of a positron in an electron gas. Sigma sub 1 is inversely proportional to the inelastic collision rate between the positron and the electron gas. The calculation was done using standard many body techniques and within the RPA approximation. There are two contributions to Sigma sub 1 one arising from particle-hole pair excitation, the other from plasmon excitation.

Descriptors:

• *EXCITATION
• *DAMPING
• *ELECTRON GAS
• *PARTICLE COLLISIONS
• *POSITRONS
• ENERGY
• HOLES(ELECTRON DEFICIENCIES)
• PARTICLES
• GREENS FUNCTIONS
• MEAN FREE PATH

Subject Categories:

• Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE