Radiation detector
AssigneeU.S. Philips Corporation
InventorsGerardus van Aller, Walter H. Kuhl
Life of this patent
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Abstract
A detector for the detection of, for example, Cerenkov radiation includes an entrance screen (5) which may cover more than half of an envelope (1); the majority of the envelope is preferably spherical. A photo-electron detecting exit screen (11) is proportioned and arranged inside the envelope (1) so that a small decay time and a high sensitivity are achieved. A scintillant exit screen (11), which is mounted on an indentation (15) in the envelope (1), can thus produce, in conjunction with a photomultiplier tube (17) mounted inside the indentation (15), a photoelectric intensification by a factor 100.
Claims10
A radiation detector, comprising:
- an envelope;
- an entrance screen for converting radiation outside the envelope into electrons inside the envelope, the entrance screen comprising a photocathode which extends within the envelope over substantially a solid angle of at least 180.degree., and
- an electron-detecting exit screen for collecting the electrons from the entrance screen, the exit screen being proportioned and arranged such that the exit screen collects photoelectrons from the entire photocathode.
Dependencies are inferred from the claim text.