Patents Assigned to Thermo Electron Limited
  • Patent number: 8680476
    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.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: March 25, 2014
    Assignee: Thermo Electron Limited
    Inventors: Neil Andrew Webster, John Stanley Usher, Christopher Edward Hill, Michael Hodgson