Lockheed Martin Idaho Technologies, P.O. Box 1625, Idaho Falls, ID 83415-3805

A -- SOFTWARE MODELS FOR CALIBRATING A PORTABLE GAMMA SPECTROSCOPY LOGGING SYSTEM Contact Ms. Jane Clemmensen. Lockheed Martin Idaho Technologies (LMIT), P.O. Box 1625, Idaho Falls, ID 83415-3805; a management and operating contractor for the Department of Energy at the Idaho National Engineering Laboratory (INEL). LMIT has developed the following technology, which is available for licensing: Portable gamma spectroscopy logging systems are used to identify and quantify gamma-emitting radioisotopes in the ground through boreholes. Current practices in high resolution gamma spectroscopy well logging provide only approximate estimates of the quantities of radioisotopes in the subsurface. These system require an energy and efficiency calibration. LITCO has developed computer models to estimate the effects of geologic formation porosity and moisture content. The models exist as ASCII text files in IBM-PC format and are used with MicroShield software commercially available from Grove Engineering. The model files contain information pertaining to the transport of photons through geologic material with various porosities and moisture contents. The energy range of photons considered is from 186 eV to 2614 keV. The models serve as a comparison between the calibration conditions present in the physical sources in Grand Junction, Colorado, and variations of the source porosity and moisture content that may be encountered in the field. Parties interested in the technology should send a written expression of interest, information describing their company and its capabilities in ground monitoring, and a description of the intended use and markets for the technology. If international markets are contemplated, the countries of interest should be listed. Send responses to: Ms. Jane Clemmensen, Technology Transfer Office, LMIT, P.O. Box 1625, Idaho Falls, ID 83415-3805. The closing date on this opportunity is 30 days after publication. (324)

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