Semiconductor anode photomultiplier tube

Details Semiconductor anode photomultiplier tube Semiconductor anode photomultiplier tube

1991-01-17

1992-06-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313532, H01J 4014

Patent

active

051209497

ABSTRACT:
A photomultiplier tube in which the a semiconductor photodiode serves as the anode and receives the electrons from the photocathode. The particular geometry for the focusing electrodes in the tube involves a two part structure with one part, the anode focus electrode, in close proximity to the semiconductor photodiode. The second part of the focus structure is a grid focus electrode with two different diameters, located approximately midway between the photodiode and the photocathode and operating on a low voltage. Together the electrodes create a focusing electric field so that the electrons from the large area photocathode are efficiently delivered to the small area of the semiconductor photodiode. The mounting of the photodiode is also designed to act as a termination to furnish superior timing characteristics.

REFERENCES:
patent: 3069591 (1962-12-01), Sclar
patent: 3851205 (1974-11-01), Picker
patent: 3887810 (1975-06-01), Skaggs
patent: 4095136 (1978-06-01), Niklas
patent: 4628273 (1986-12-01), Vlasak
patent: 4718761 (1988-01-01), Tsuchiya
patent: 4825066 (1989-04-01), Nakamura et al.
patent: 4853595 (1989-08-01), Alfano et al.

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