Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent
1987-11-30
1990-05-08
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Including a radiant energy responsive gas discharge device
250374, G01T 1185
Patent
active
049240986
ABSTRACT:
A nuclear radiation level detector includes an ionization chamber. Within the ionization chamber are spaced electrodes. The space between the electrodes communicates with the atmosphere so as to expose the electrodes to the atmosphere. A voltage source applies a potential across the electrodes. When the atmosphere is not contaminated with nuclear radiation above a reference level, the current flow between the electrodes is nil or substantially so. In the event the atmosphere is contaminated with nuclear radiation above a reference level, a measurable current flows between the electrodes. A measurement and alarm circuit operates an alarm in response to the current flow between the electrodes of a measurable magnitude.
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Fields Carolyn E.
Radiation Detectors, Inc.
Wiseman Jack M.
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