Mercuric iodide X-ray detector

Details Mercuric iodide X-ray detector Mercuric iodide X-ray detector

1991-11-22

1993-07-13

Dzierzynski, Paul M.

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

25037001, 2503361, G01T 124, H01L 3100

Patent

active

052276350

ABSTRACT:
Mercuric Iodide X-RAY detectors are made to exhibit high energy resolution characteristics, reduced background level in the x-ray spectra, enhanced sensitivity to low energy x-rays and significantly improved long term stability and reliability. The above improvements has been achieved through specific changes in the detector construction and passivation/encapsulation techniques. Specifically, the introduction of a guard ring structure and collimating shield improved the electric field distribution in the detector, reduced the surface leakage current, lowered effective capacitance and eliminated current injections. A special Parylene-C and Parylene-N deposition onto the detector surface insured excellent long term detector stability and reliability.

REFERENCES:
patent: 3638022 (1972-01-01), Kozlov
patent: 3858047 (1974-12-01), Kozlov
patent: 3916200 (1975-10-01), Sparks, Jr. et al.
patent: 4751391 (1988-06-01), Eberhard et al.
patent: 4883967 (1989-11-01), Tsutsui et al.

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