Electron discharge device having a high speed cage

Details Electron discharge device having a high speed cage Electron discharge device having a high speed cage

1981-10-14

1984-02-14

Moore, David K.

Electric lamp and discharge devices

Photosensitive

Photomultiplier

313541, H01J 4000

Patent

active

044319436

ABSTRACT:
A photomultiplier tube comprises an evacuated envelope having therein a photocathode, an anode and a high speed electron multiplier. The electron multiplier includes a primary dynode having a substantially parallel electron permeable member spaced from the primary dynode and disposed between the photocathode and the primary dynode. The electron permeable member also extends between the primary dynode and a plurality of secondary dynodes and accelerates secondary electrons from the primary dynode towards an input secondary dynode. Steering means disposed between the electron permeable member and the secondary dynodes direct the secondary electrons toward the input secondary dynode. Optional electron permeable second members, spaced from and disposed parallel to the secondary dynodes are operated at a potential midway between the adjacent dynode and the next succeeding dynode to accelerate the secondary electrons towards the anode.

REFERENCES:
patent: 2868994 (1959-01-01), Anderson
patent: 2908840 (1959-10-01), Anderson
patent: 3099764 (1963-07-01), McDonie et al.
patent: 3109957 (1963-11-01), McGee et al.
patent: 3753023 (1973-08-01), Sommer

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