Angular time synchronized directional radiation sensor

Details Angular time synchronized directional radiation sensor Angular time synchronized directional radiation sensor

1998-11-23

2000-08-08

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250359, 2503601, 2504581, 250267, 250367, G01T 118

Patent

active

061005304

ABSTRACT:
An angular time-synchronized directional radiation sensor is provided to indicate the direction, or distribution of directions, of incident gamma radiation, and consequently, to locate sources of radioactivity emitting these photons. The angular time-synchronized directional radiation sensor comprises a rotating radiation sensing means, interacting with the incident radiation to produce light flashes, together with a stationary photomultiplier tube that converts the light flashes to electrical pulses that are counted by a data collection means. A synchronous motor enables the radiation sensing means to complete a 360.degree. scan within 1 second to reduce the time needed for measuring from hours to only a few minutes. The data collection means calculates an angle of rotation at a corresponding fraction of the 360.degree. scan to rapidly indicate the direction of a radiation source. In one embodiment, the data collection means is a computer. The radiation sensing means can be a scintillator assembly.

REFERENCES:
patent: 5345084 (1994-09-01), Byrd
patent: 5557107 (1996-09-01), Carcreff et al.
patent: 5665970 (1997-09-01), Kronenberg et al.
Chubb et al., "A Direction Neutron Detector for Space Research Use", IEEE ansactions on Nuclear Science NS-13, pp. 468-477, Feb. 1966.
Stetson et al., "A Directional Scintillation Counter for Neutrons", 6 Nuclear Instruments and Methods, pp. 94-95, 1960.
Kronenberg et al., "Directional detector for arrays of gamma ray and X-ray sources", Nuclear Instruments & Methods in Physics Research, Section A, pp. 531-540, (1996).
Kronenberg et al., "Locating and imaging sources of gamma and X-radiation directly or through thick shields", Nuclear Instruments & Methods in Physics Research, Section A, pp. 401-409, (1997).
Kronenberg et al., "High angular resolution sensing of gamma rays in space", International Society for Photo-Optical Instrumentation Engineers Journal, vol. 3116, pp. 49-56, Jul. 1997.

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