Radiation detector

Details Radiation detector Radiation detector

1980-12-05

1983-07-12

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

313 93, G01T 118, H01J 4700

Patent

active

043933068

ABSTRACT:
Apparatus is provided for detecting radiation such as gamma rays and X-rays generated in backscatter Mossbauer effect spectroscopy and X-ray spectrometry, which has a large "window" for detecting radiation emanating over a wide solid angle from a specimen and which generates substantially the same output pulse height for monoenergetic radiation that passes through any portion of the detection chamber. The apparatus includes a substantially toroidal chamber with conductive walls forming a cathode, and a wire anode extending in a circle within the chamber with the anode lying closer to the inner side of the toroid which has the least diameter than to the outer side. The placement of the anode produces an electric field, in a region close to the anode, which has substantially the same gradient in all directions extending radially from the anode, so that the number of avalanche electrons generated by ionizing radiation is independent of the path of the radiation through the chamber.

REFERENCES:
patent: 2944176 (1960-07-01), Anton
patent: 3011060 (1961-11-01), Dorenbosch et al.
patent: 3488501 (1970-01-01), Poubeau
patent: 4289967 (1981-09-01), Hanson et al.
Keisch, "Detector for Efficient Backscatter Mossbauer Effect Spectroscopy", Nuclear Inst. & Methods 104(1972) 237-240.

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