Microgap ultra-violet detector

Details Microgap ultra-violet detector Microgap ultra-violet detector

1993-02-01

1994-09-20

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

250374, G01J 528, H01J 4006

Patent

active

053491947

ABSTRACT:
A microgap ultra-violet detector of photons with wavelengths less than 400 run (4000 Angstroms) which comprises an anode and a cathode separated by a gas-filled gap and having an electric field placed across the gap. Either the anode or the cathode is semi-transparent to UV light. Upon a UV photon striking the cathode an electron is expelled and accelerated across the gap by the electric field causing interactions with other electrons to create an electron avalanche which contacts the anode. The electron avalanche is detected and converted to an output pulse.

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A. Peisert and F. Sauli, "A Two-Dimensional Parallel-Plate Chamber for High-Rate Soft X-Ray Detector", Nuclear Instruments and Methods In Physics Research A, vol. 127 (Jul. 1, 1986) pp. 453-459.

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