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Instrumental and atmospheric background lines observed by the SMM gamma-ray spectrometerPreliminary identifications of instrumental and atmospheric background lines detected by the gamma-ray spectrometer on NASA's Solar Maximum Mission satellite (SMM) are presented. The long-term and stable operation of this experiment has provided data of high quality for use in this analysis. Methods are described for identifying radioactive isotopes which use their different decay times. Temporal evolution of the features are revealed by spectral comparisons, subtractions, and fits. An understanding of these temporal variations has enabled the data to be used for detecting celestial gamma-ray sources.
Document ID
19900038269
Document Type
Conference Proceedings
Authors
Share, G. H. (Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Kinzer, R. L. (Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Strickman, M. S. (U.S. Navy, E. O. Hulburt Center for Space Research, Washington DC, United States)
Letaw, J. R. (Severn Communications Corp. Severna Park, MD, United States)
Chupp, E. L. (New Hampshire, University Durham, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
SPACE RADIATION
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-14513-D
CONTRACT_GRANT: BMFT-01-OK-017-ZA/WS/WRK-0275
CONTRACT_GRANT: NAG5-720
Distribution Limits
Public
Copyright
Other