NDLI: Radial response of the burst and transient source experiment

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Radial response of the burst and transient source experiment

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lestrade, John Patrick
Copyright Year	1989
Description	The Gamma Ray Observatory (GRO) includes four experiments designed for observe the gamma-ray universe, one of which is the Burst And Transient Source Experiment (BATSE). During the first summer with the BATSE team in 1988, laboratory measurements were completed which test the response of the BATSE modules to gamma-ray sources that are non-axial. The results of these observations are necessary for the correct interpretation of BATSE data obtained after it is put in earth orbit. Subsequent analysis of the data revealed a shift in the centroids of the full-energy photopeaks for angles of incidence between about 70 and 110 degrees. This effect was diagnosed as being due to a radial dependence of the light collecting efficiency of the large-area detector (LAD). Energy-depositing events that occur near the perimeter of the 10-inch radius NaI disc are not as efficiently collected as those events that occur near the disc's center. This radial response is analyzed and in so doing the non-Gaussian shape of the photopeaks seen in the spectra taken at all angles is explained.
File Size	743860
Page Count	32
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19900010092
Archival Resource Key	ark:/13960/t9h46mz50
Language	English
Publisher Date	1989-12-01
Access Restriction	Open
Subject Keyword	Space Radiation Gamma Rays Photopeak Performance Tests Calibrating Gamma Ray Observatory Radiation Counters Universe High Energy Interactions Centroids Gamma Ray Bursts Gamma Ray Astronomy Earth Orbits Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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