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US 4,900,930 AGranted
Alpha-ray image detecting apparatus
AssigneeHamamatsu Photonics K.K.
InventorsYoshihiro Takiguchi, Katsuyuki Kinoshita
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Abstract
An alpha-ray image detecting apparatus detects the image of alpha-rays emitted from nuclides of a substance by analyzing the electrons emitted from the substance. The apparatus includes a vacuum chamber having a layer of fluorescent material at one end and an electronic optical system for multiplying the emitted electrons and focusing the emitted electrons on the fluourescent layer.
Claims6
An alpha-ray image detecting apparatus comprising:
- a vacuum container for holding in a vacuum within the container a substance including alpha-ray radiating nuclides;
- a fluorescent layer formed on an inner surface of the container;
- and
- a system for multiplying electrons emitted from the alpha-ray radiating nuclides in the surface of the substance and for focusing the multiplied electrons on said fluorescent layer.
1 more element
Dependencies are inferred from the claim text.