Large area spark chamber and support, and method of recording an

Details Large area spark chamber and support, and method of recording an Large area spark chamber and support, and method of recording an

1982-04-21

1985-02-19

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Including ionization means

G01T 1185

Patent

active

045007861

ABSTRACT:
Novel large area spark chamber having a support for carrying a generally planar, radioactive work piece. The spark chamber has a thin window which is either a rigid plastic sheet carrying a thin layer of an electrically conductive material on the surface thereof, or a thin planar piece or film of electrically conductive metal. There is positioned in superposed relationship to the thin window, a layer of semi-conducting glass in spaced-apart relationship from the thin window by a resilient insulating seal to form an enclosed gas retaining chamber. An electrically conducting surface is adhered to the upper surface of the layer of semi-conducting glass. An electrically conductive path is provided between the thin layer of electrically conductive material on the thin window and the electrically conducting surface on said semi-conducting glass. The electrically conductive path includes a high voltage supply and TDCs and ADCs. There are also means for detecting the location of sites of impingement of radiation on the electrically conducting surface of the semi-conducting glass, and means for recording and analyzing the information present on the work piece.

REFERENCES:
patent: 3373283 (1968-03-01), Lansiart et al.
patent: 3449573 (1969-06-01), Lansiart et al.
patent: 3461293 (1969-08-01), Horwitz
patent: 3717766 (1973-02-01), Allard et al.
patent: 3975639 (1976-08-01), Allemano

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