Observation of low energy (0.05-3.0 MeV) gamma radiation with a Ge-Li telescope at the geomagnetic latitude lambda = 12 degrees S

Details Observation of low energy (0.05-3.0 MeV) gamma radiation with a Ge-Li telescope at the geomagnetic latitude lambda = 12 degrees S Observation of low energy (0.05-3.0 MeV) gamma radiation with a Ge-Li telescope at the geomagnetic latitude lambda = 12 degrees S

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981phdt.........2d&link_type=abstract

Ph.D. Thesis - 29 Feb. 1980 Instituto de Pesquisas Espaciais, Sao Jose dos Campos (Brazil).

Astronomy and Astrophysics

Astronomy

Balloon-Borne Instruments, Galactic Radiation, Gamma Ray Spectra, Geomagnetic Latitude, Line Spectra, Gamma Ray Astronomy, Germanium Compounds, Lithium Compounds, Photon Density, Spectroscopic Analysis

Scientific paper

Four experiments of low energy gamma ray were flown from Guaratingueta, Brazil with a balloon-borne Ge(Li) instrument for the detection of gamma ray lines from the direction of the galactic center, the gamma ray spectra measured in these experiments, were submitted to a fine spectroscopic analysis in order to study the contribution of atmospheric and induced lines in the detector as well as in the payload. Several atmospheric and induced lines could be identified in the gamma ray spectra. The analysis of the gamma ray spectra of two of the flights showed an intensity of (4.19 + or - 1.56) x 10 to the -3 power photons/sq cm/s for the flux of the annihilation line from the direction of the galactic center. The astrophysical implications of this result are discussed.

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