Photomultiplier tube using means of preventing divergence of ele

Details Photomultiplier tube using means of preventing divergence of ele Photomultiplier tube using means of preventing divergence of ele

1988-08-04

1990-06-26

O'Shea, Sandra

Electric lamp and discharge devices

Photosensitive

Photomultiplier

250207, 313532, H01J 4318, H01J 4014

Patent

active

049375067

ABSTRACT:
A photomultiplier tube comprising a photocathode, a plurality of mesh dynodes arranged parallel to the photocathode, an anode that is disposed in a face-to-face relationship with the photocathode in such a manner that the mesh dynodes are interposed between the anode and the photocathode, the anode being divided into segments larger than the openings of each dynode, and at least one layer of focusing electrode for focusing an electron beam by the lens action which is disposed between the photocathode and the anode.

REFERENCES:
patent: 2234801 (1941-03-01), Gorlich
patent: 3062962 (1962-11-01), McGee
patent: 3959680 (1976-05-01), Morales
patent: 4678921 (1987-08-01), Kojola
Roney et al., "Detector Identification with Four BGO Crystals on a Dual PMT," IEEE Transactions on Nuclear Science, vol. NS-31, No. 5, pp. 1022-1023, Oct. 1984.
Boutot et al., "Multianode Photomultiplier for Detection and Localization of Low Light Level Events," IEEE Transactions on Nuclear Science, vol. NS-34, No. 1, pp. 449, 451, 452, Feb. 1987.
Yamashita et al., "New Dual Rectangular Photomultiplier Tube for Positron CT.," IEEE Proceedings-International Workshop on Physics and Engineering in Medical Imaging, Pacific Grove, Cal., pp. 209-211, Mar. 15-18, 1982.

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