Instrument for measuring levels of concentration of tritium and

Details Instrument for measuring levels of concentration of tritium and Instrument for measuring levels of concentration of tritium and

1984-08-13

1986-10-21

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250304, 250429, 250432R, G01T 120, G01T 702

Patent

active

046187740

ABSTRACT:
An instrument for measuring levels of concentration of tritium and tritium oxides in environmental air includes a scintillation detector, such as a photomultiplier, and a controlled device for exposing scintillators to the detector in succession. Air being monitored is passed over the scintillators. A thermoelectric device is used to cool and warm one of the scintillators for condensing air moisture onto its surface and for evaporating moisture from it, the count rate being measured in both instances. The other scintillator is a reference scintillator, the count rate from which is also measured, and a measurement is taken with neither of the scintillators exposed to the scintillation detector. The concentration levels of tritium and tritium oxides are computed from the set of measurements.

REFERENCES:
patent: 3558883 (1971-01-01), Bench et al.
patent: 3621238 (1971-11-01), Jalbert
patent: 3999066 (1976-12-01), Osborne et al.
patent: 4019864 (1977-04-01), Saito et al.

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