Electron discharge device having a thermionic emission-reduction

Electric lamp and discharge devices – Photosensitive – Photomultiplier

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

REFERENCES:
patent: 2027025 (1936-01-01), De Boer et al.
patent: 2189322 (1940-02-01), Flory
patent: 2273637 (1942-02-01), Glover
patent: 3327152 (1967-06-01), Greilich
patent: 3350591 (1967-10-01), Van Asselt
patent: 3372967 (1968-03-01), Hughes
patent: 3906274 (1975-09-01), Silver et al.
patent: 3932783 (1976-01-01), Mewelly et al.
Electronic Processes in Materials, by Azaroft et al, 1963, pp. 313-316.
Photomultiplier Handbook, RCA PMT-62, pp. 19-21, 53-62.
G. N. Butterwick, "Oil Exploration with Photomultiplier Tubes", RCA Engineer, pp. 62-65, vol. 24, No. 5, Feb./Mar. 1979.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electron discharge device having a thermionic emission-reduction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electron discharge device having a thermionic emission-reduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron discharge device having a thermionic emission-reduction will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1088509

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.