Imaging dynodes arrangement

Details Imaging dynodes arrangement Imaging dynodes arrangement

1984-03-09

1987-03-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313105R, H01J 4014

Patent

active

046492682

ABSTRACT:
An imaging dynodes arrangement for an electron multiplier, which comprises a first and a second imaging dynodes having dynode cones with a cone tip and a cone base, said dynode cones being connected with each other such that they form free cavities therebetween. Furthermore, there are needle-shaped extraction points arranged at the cone tips of at least the dynode cones of the second imaging dynode. The second imaging dynode is mounted beneath the first imaging dynode in a staggered position such that the cone tips of the dynode cones of the second imaging dynode are seated beneath the cavities of the first imaging dynode, directing the needle-shaped extraction points closely to the cavities. In a preferred embodiment the needle-shaped extraction points protrude into the cavities.

REFERENCES:
patent: 3939374 (1976-02-01), Schagen et al.
patent: 3939375 (1976-02-01), Schagen et al.
patent: 4112326 (1978-09-01), Faulkner
patent: 4143291 (1979-03-01), Morales

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