Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent
1982-11-22
1985-01-29
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Including a radiant energy responsive gas discharge device
250367, G01T 118
Patent
active
044968426
ABSTRACT:
A radiation detector is assembled using spacers which contact one another through apertures in the electrode plates of the detector, so that the relevant thickness dimension of the dimensionally accurate spacers determines the spacing of the plates. Thickness variations of the plates can be compensated for at a supporting surface of the spacers being provided with depressable raised portions. The plates may be constructed as laminations for collimator beyond which a radiation-sensitive element is arranged, and can also form electrode plates for a gas ionization detector.
REFERENCES:
patent: 4031396 (1977-06-01), Whetten et al.
patent: 4345155 (1982-08-01), Allemand et al.
Hermens Joannes L. G.
Kerkhof Matheus W.
Howell Janice A.
Miller Paul R.
U.S. Philips Corporation
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