Accession Number:

AD0783774

Title:

Positronium: A Review of the Calculations.

Descriptive Note:

Environmental research papers,

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s):

Report Date:

1974-06-03

Pagination or Media Count:

33.0

Abstract:

For typical magnetospheric densities, free positrons have a lifetime of between one million and one trillion seconds. A portion of the injected positrons undergo free annihilation and a portion form positronium. Results are given of the theoretical calculations of positronium properties without presenting the intermediate steps that depend on a knowledge of quantum electrodynamics. This paper is a review of the calculations of positronium state 1 decay rates, 2 energy levels, and 3 external field behavior. Theoretical results are compared with only the latest experimental results. The coverage is substantially complete from the pre-experimental years 1930 to 1950 to the present 1974. Emphasis is placed on stating final theoretical results and giving references to original work rather than giving a step-by-step account of the calculations. Modified author abstract

Subject Categories:

  • Atmospheric Physics
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE