Electric lamp and discharge devices – Photosensitive – Photomultiplier
Patent
1983-10-28
1987-04-07
Bashore, S. Leon
Electric lamp and discharge devices
Photosensitive
Photomultiplier
313543, 313107, 427 77, H01J 4318
Patent
active
046563920
ABSTRACT:
An electron discharge device, such as a photomultiplier tube, has an evacuated envelope with an alkali-antimonide photoemissive cathode therein. A thermionic emission-reduction coating is disposed within the envelope. The coating alloys with the constituents of the photoemissive cathode to reduce thermionic emission. The thermionic emission reduction coating is formed preferably of indium; however, indium oxide may also be used.
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G. N. Butterwick, "Oil Exploration with Photomultiplier Tubes", RCA Engineer, pp. 62-65, vol. 24, No. 5, Feb./Mar. 1979.
Faulkner Richard D.
McHose Robert E.
Bashore S. Leon
Boyer Michael K.
Coughlin Jr. Vincent J.
Irlbeck Dennis H.
RCA Corporation
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