X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2006-03-07
2006-03-07
Church, Craig E. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S050000
Reexamination Certificate
active
07010087
ABSTRACT:
The density of a mass of material is determined by passing radiation from a source, such as Co-60, whose radiation spectrum has a characteristic energy level above 700 keV through the mass of material to a detector that can detect radiation at a energy level, or range of energy levels, within the range 80 to 700 keV. By determining the density of the mass of material at different locations, the density profile of the mass of material can be assessed.
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Friggens et al. “Nuclear Gages Applied to a Pressurized Gas Producer for Location of Coal Bed Level and Combustion Zone”Advances in Instrumentation, Proceedings of the 25thAnnual ISA Conference(Oct. 1970) pp. 8041-8043 -- Accession No. XP-002195038.
Church Craig E.
Johnson Matthey PLC
Mayer Brown Rowe & Maw LLP
Suchecki Krystyna
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