Cathode/converter

Details Cathode/converter Cathode/converter

1987-03-09

1989-03-28

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

250374, G01T 1185

Patent

active

048166839

ABSTRACT:
A combined cathode/converter for the ionization chamber of a MWPC photon detector comprising an array of rectangular wells in a layer of lead or lead alloy, formed by spark-erosion machining. The thickness of the walls and floor of each well is so as to maximize the efficiency of the detector by increasing the surface area to volume ratio of the cathode/converter.

REFERENCES:
patent: 3971942 (1976-07-01), Seidman et al.
patent: 4320299 (1982-03-01), Bateman et al.
patent: 4485307 (1984-11-01), Osborne et al.
patent: 4725705 (1988-02-01), Holland-Moritz et al.
patent: 4735678 (1988-04-01), Mandigo et al.
Lim et al., "Characteristics of Multiwire Proportional Chambers for Positron Imaging", IEEE Trans. Nucl. Sci., 21, 1974, pp. 85-88.
Chu et al., "High Efficiency Collimator-Converters for Neutral Particle Imaging", IEEE Trans. Nucl. Sci., 23 (1), pp. 634-639, Feb. 1976.

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