Radiant energy – Fluent material containment – support or transfer means – With irradiating source or radiating fluent material
Patent
1991-01-29
1993-08-10
Fields, Carolyn E.
Radiant energy
Fluent material containment, support or transfer means
With irradiating source or radiating fluent material
250304, 250364, 250432R, G01T 704
Patent
active
052351904
ABSTRACT:
A continuous air monitor is provided with the capabilities of monitoring certain transuranic and other airborne radioactive particulate with high accuracy and low false alarm rates in the presence of radon and thoron daughter products. A multiple filter sampling approach is used wherein air flow is directed on a alternating basis to each sampling filter in turn. Each filter collects particulate in the size range of interest. Beta and/or alpha activity can be continuously measured on each filter. The air flow can be directed through a chamber where radon and/or thoron gas portions of the air may decay into their daughters and the quantities thereof may be separately measured.
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McGreevy John E.
Tucker Richard W.
Fields Carolyn E.
Gemini Research, Inc.
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