Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977esasp.124..287a&link_type=abstract
In ESA Recent Advan. in Gamma-Ray Astronomy p 287-291 (SEE N78-11899 02-88)
Astronomy and Astrophysics
Astronomy
Balloon-Borne Instruments, Gamma Rays, Radiation Detectors, Calibrating, Proportional Counters, Time Of Flight Spectrometers, Wire
Scientific paper
A large area gamma-ray detector was flown on Oct 10, 1976, at an altitude of 1.55 millibars and at 32 deg north latitude. The instrument consists of an array of 16 multiwire proportional counters interspersed with sheets of tantalum which serve as a converter. The detection of downward moving particles from the bottom of the array, in anticoincidence with counters on the top and sides, caused the proportional counter array to be read out. Prior to the flight, the instrument was calibrated using 20 MeV gamma-rays. The flight observed the region in right ascension from 22 to 11 hrs and declination from 0 to 65 deg north. Preliminary results of an analysis of the flight data and results of the calibration are presented.
Albats P.
Denehy B.
Frye Glenn M.
Jenkins Thomas L.
Koga Ryan
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