Radiation detector

Details Radiation detector Radiation detector

2011-04-05

2011-04-05

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

C250S36100C

Reexamination Certificate

active

07919757

ABSTRACT:
A thin radiation detector with a high sensitivity is described. The radiation detector has light receiving elements receiving lights emitted by scintillators, performs a photoelectric conversion by using an avalanche multiplication film formed by amorphous selenium, and reads signals by using electron beams constantly discharged from a plurality of electron beam emitting sources called as a field emission array. The avalanche multiplication film formed by amorphous selenium is quite thin and has a simple structure, so it can be formed compactly and realized at a low cost. In addition, a signal amplification degree is approximately 1000 times, so an expensive low noise amplifier or a dedicated temperature adjusting mechanism is not required, and a quantum efficiency is sufficient for a wavelength of 300˜400 nm.

REFERENCES:
patent: 5146296 (1992-09-01), Huth
patent: 6552348 (2003-04-01), Cherry et al.
patent: 08327744 (1996-12-01), None
patent: 2004-354343 (2004-12-01), None

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