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Remote in-situ elemental analysis systems for underwater applicationThe systems approach, theoretical measurement calculations, and preliminary measurements to be used in monitoring and mapping pollutants (such as traces of heavy metals) in the Chesapeake Bay are discussed. A neutron gamma-ray method is under development for demonstrating the system. The excitation source to be used is a machine accelerator using a deuterium/tritium reaction to produce 14-MeV neutrons. The neutrons excite characteristic gamma ray emission from the neutron irradiated surface. The discrete line emission produced can be used to infer both qualitative and quantitative elemental composition. A data preprocessor will accumulate, digitize, store, format, and prepare the data for transmission which can be accomplished by telephone, microwave, and possibly satellite link to central processors.
Document ID
19780013603
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Trombka, J. I.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stehling, K. R.
(NOAA Rockville, Md., United States)
Date Acquired
August 9, 2013
Publication Date
February 1, 1978
Publication Information
Publication: Appl. of Remote Sensing to the Chesapeake Bay Reg.
Subject Category
Earth Resources And Remote Sensing
Accession Number
78N21546
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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