Photomultiplier tube with inverting dynode plate

Details Photomultiplier tube with inverting dynode plate Photomultiplier tube with inverting dynode plate

1997-10-21

1999-06-29

O'Shea, Sandra

Electric lamp and discharge devices

Photosensitive

Photomultiplier

313103R, 313104, 313540, H01J 4310, H01J 4318

Patent

active

059172819

ABSTRACT:
According to the photomultiplier tube, the dynode unit 10 is constructed from a plurality of stages of dynodes 11 laminated one on another for multiplying incident electrons in a cascade manner through each of a plurality of channels. The anode unit 13 has a plurality of anodes 24 which define a plurality of electron passage gaps 14 each for transmitting the electrons emitted from the dynode unit 10 at a corresponding channel. The inverting dynode plate 15 is provided with a plurality of electron incident strips 17 each for receiving electrons having passed through a corresponding electron passage gap 14 in the anode unit 13, multiplying the electrons, and guiding the electrons back to the corresponding anode 24. The electron incident strip 17 is designed to have: the main surface 18a confronting the electron passage gap 14; and the rising surface 18c rising toward the anode unit 13 from the edge 18b of the main surface 18a which is located at a position confronting the electron passage gap 14 in the anode unit 13.

REFERENCES:
patent: 5180943 (1993-01-01), Kyushima
patent: 5410211 (1995-04-01), Kyushima
patent: 5504386 (1996-04-01), Kyushima et al.
patent: 5572089 (1996-11-01), Kyushima et al.
patent: 5619100 (1997-04-01), Kyushima et al.
patent: 5637959 (1997-06-01), Kyushima et al.

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