Hard X-ray and Low Energy Gamma Ray Experiment, HEAO A-4.
The A-4 experiment consisted of a modular array of phoswich
scintillator detectors, particle monitors, a digital processor
containing power conditioning, and data handling electronics. The
purpose of the experiment was to determine the position, spectrum,
time variations, intensity, and other properties of selected X- and
gamma ray sources in the energy range of 10 to 10000 kiloelectron
volts. Principal Investigators were Laurence Peterson of the
University of California at San Diego (UCSD) and Walter Lewin of MIT.
Experiment hardware was provided by UCSD and Time Zero Laboratories
of Ball Brothers Research Corporation.
SP-466 The Star Splitters
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