Threshold self-powered gamma detector for use as a monitor of power in a nuclear reactor
US4091288A · kind A · utility
6Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1977 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Apr 4, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T3/006
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A self-powered gamma monitor for placement near the core of a nuclear reactor comprises a lead prism surrounded by a coaxial thin nickel sheet, the combination forming a collector. A coaxial polyethylene electron barrier encloses the collector and is separated from the nickel sheet by a vacuum region. The electron barrier is enclosed by a coaxial stainless steel emitter which, in turn, is enclosed within a lead casing. When the detector is placed in a flux of gamma rays, a measure of the current flow in an external circuit between emitter and collector provides a measure of the power level of the reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.