Low-temperature positron annihilation

Details Low-temperature positron annihilation Low-temperature positron annihilation

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aipc..101...27d&link_type=abstract

In its NASA/Goddard Space Flight Center Contrib. to the Workshop on Positron-Electron Pairs in Astrophys. p 27-38 (SEE N83-2792

Astronomy and Astrophysics

Astrophysics

Galactic Nuclei, Galactic Radiation, Gamma Rays, Positron Annihilation, Hydrogen, Inelastic Scattering, Mathematical Models, Particle Collisions, Scattering Cross Sections, Time Dependence

Scientific paper

For a satisfactory understanding of astrophysical annihilation radiation, especially that observed from the galactic center direction, the interaction of positrons with the ambient medium must be carefully investigated. Although hot, ionized regions may be important sources of annihilation radiation, the simpler processes occurring in low-temperature neutral hydrogen gas are mainly addressed. The goal is to set limits on conditions in the annihilation region by using the predictions of atomic theory compared with the observed gamma-ray line width, continuum strength and time dependence.

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