Beta radiation monitor and method
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United States of America Patent
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Mar 25, 2014
Grant Date -
Dec 29, 2011
app pub date -
Dec 9, 2009
filing date -
Dec 9, 2008
priority date (Note) -
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Abstract
A beta radiation monitor (70,90), comprising a gas flow proportional detector (60) for detecting beta radiation emitted by a beta emitter external to the detector; a fill gas supply (51) configured to supply a fill gas to the detector, wherein the fill gas comprises nitrogen; a temperature sensor (72) for measuring temperature; and a controller (64) in communication with the temperature sensor for adjusting an operational parameter of the monitor in accordance with the measured temperature. The operational parameter may comprise a voltage applied across the fill gas, which may be thermistor controlled, or a beta radiation detection threshold of the detector. The fill gas is supplied by a nitrogen generator. The gas flow proportional detector may be a large-area detector.
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