Gamma-ray-line astronomy

Details Gamma-ray-line astronomy Gamma-ray-line astronomy

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sciam.243...62l&link_type=abstract

Scientific American, vol. 243, July 1980, p. 62-70.

Astronomy and Astrophysics

Astrophysics

1

Astrophysics, Balloon-Borne Instruments, Gamma Ray Astronomy, Milky Way Galaxy, Satellite-Borne Instruments, Chemical Reactions, Cosmic Rays, Electron Emission, Gamma Ray Telescopes, Neutron Stars, Novae, Positron Annihilation, Sodium Iodides, Spectrum Analysis, Supernovae, Wavelengths

Scientific paper

The balloon and satellite detection of gamma rays from astrophysical sources is discussed. Supernovas and novas are considered with regard to the cosmic synthesis of the chemical elements, and particular attention is given to the production of gamma rays by neutron stars. Also discussed is gamma-ray-line broadening, and the generation of gamma rays by electron-positron annihilation, atomic nuclei emission, and electron cyclotron emission. A gamma-ray-line telescope is described which consists of a detector inside a detector, and contains 400 pounds of sodium iodide with tellurium atoms introduced as a dopant and a germanium crystal at the center.

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