Device for coupling a first dynode of a photomultiplier to a lea

Details Device for coupling a first dynode of a photomultiplier to a lea Device for coupling a first dynode of a photomultiplier to a lea

1989-06-05

1990-09-11

O'Shea, Sandra L.

Electric lamp and discharge devices

Photosensitive

Photomultiplier

313532, 313536, H01J 4306, H01J 4302

Patent

active

049565761

ABSTRACT:
Photomultiplier tube (10) comprising a photocathode (20), a first cylindrical dynode (30), an electron multiplier device (40) of the "leaf" type, and a device (50) for coupling the first dynode (30) to the multiplier device (40). According to the invention, the said coupling device (50) consists, on the one hand, of a first electrode (51) composed of a cylindrical lateral plate (52) of axis parallel to that of the multiplier device and of an upper plate (53) pierced by an opening (54) for passage of the photoelectrons (21) towards the first dynode (30), and, on the other hand, of a second plane electrode (55) situated between the exit (32) of the first dynode (30) and the entrance (42) of the multiplier device (40).

REFERENCES:
patent: 4649314 (1987-03-01), Eschard

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