activation detector

activation detector

A device used to determine neutron flux or density by virtue of the radioactivity induced in it as a result of neutron capture.
References in periodicals archive ?
Specifically, the company has been charged with developing a Liquefied Noble gas detector (in collaboration with Yale University), a threshold activation detector, a human portable system and an aircraft inspection solution.
The equipment presently utilized in the Traffic Signal System and associated materials and equipment to be maintained under this contract consists all traffic signal infrastructure such as but not limited to solid state electronic controllers manufactured by Eagle Signal Company (also now known to be Siemens), cabinets, flashers (hard-wired and solar), internally illuminated street name signs, driver feedback signs, internally illuminated case signs, vehicular signals, pedestrian signals, pedestrian push buttons, overhead non-illuminated signs, cable, wire, messenger, mounting hardware, time base coordinators, traffic counting and activation detectors and amplifiers.
The activation detectors for the absolute flux measurements were gold and copper foils placed in the central plane.