Photomultiplier tube which is insensitive to high magnetic field

Details Photomultiplier tube which is insensitive to high magnetic field Photomultiplier tube which is insensitive to high magnetic field

1984-05-17

1986-11-18

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250213VT, 313532, H01J 4014, H01J 4304

Patent

active

046237852

ABSTRACT:
A photomultiplier tube which is insensitive to high magnetic fields comprises a photocathode deposited on a transparent window at the end of an insulating casing. The multiplier tube comprises a single amplifier stage comprising a dynode. The dynode is a metallic sheet with a circumference substantially surrounding the photocathode. A layer of a secondary emissive material is provided on the inner face of the dynode. An anode is formed of a metallic grid which is homeomorphous to the surface of the dynode. The anode is placed parallel to and at a short distance from the inside surface of the dynode.

REFERENCES:
patent: 2433724 (1944-05-01), Wolfgang
patent: 3114044 (1963-12-01), Sternglass
patent: 3183390 (1965-05-01), Grader et al.
patent: 4446401 (1984-05-01), Faulkner et al.

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