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US 4,047,031 AGranted
Apparatus for obtaining radiographs
AssigneeEastman Kodak Company
InventorLee Fitzpatrick Frank
Life of this patent
Estimating the term…
Abstract
Apparatus for making X-ray pictures by imagewise exposing a cloud chamber containing a high atomic number gas mixed with a condensate vapor. The gas is under sufficiently high pressure to assure substantially complete absorption of the incident X-rays. Optical means are provided so that visible X-ray tracks are viewed from a direction aligned with the tracks.
Claims10
Radiographic apparatus for operation with a source of X-rays, said apparatus comprising:
- means defining an air-tight chamber having a first, optically transparent end wall and a second, X-ray transparent end wall positioned between said X-ray source and said first end wall;
- a mixture in said chamber, said mixture comprising (1) an X-ray absorber gas having an atomic number of at least 36, said absorber gas acting as an ion and electron emitter when exposed to X-rays, and (2) a supersaturated vapor adapted to condense on said ions and electrons whereby the path of the X-rays will be made visible;
- and
- means for maintaining said absorber gas at a superatmospheric pressure so as to be substantially X-ray opaque.
1 more element
Radiographic apparatus comprising:
- a source of X-rays;
- means defining an air-tight chamber having a first, optically transparent end wall and a second, X-ray transparent end wall positioned between said X-ray source and said first end wall;
- means for illuminating said chamber;
- a mixture in said chamber, said mixture comprising (1) an X-ray absorber gas having an atomic number of at least 36, said absorber gas acting as an ion and electron emitter when exposed to X-rays, and (2) a supersaturated vapor adapted to condense on said ions and electrons whereby the path of the X-rays will be made visible;
- and
- means for maintaining said absorber gas at a superatmospheric pressure so as to be substantially X-ray opaque.
3 more elements
Dependencies are inferred from the claim text.