Radiant energy – Radiation controlling means – Shields
Patent
1975-03-03
1977-02-01
Church, Craig E.
Radiant energy
Radiation controlling means
Shields
H05G 300
Patent
active
040063615
ABSTRACT:
An X-ray beam flattener of predetermined symmetrical shape for attenuating the radiation intensity of the beam in decreasing amounts as the angle from the central axis increases. The symmetrical shape is made from a low Z, high density material such as Al.sub.2 O.sub.3 BeO, BeAl.sub.2 O.sub.4, B.sub.4 C or SiC. A further thin layer of high Z material may be coated on the forward end of the symmetrical shape to absorb low energy photons.
REFERENCES:
patent: 3752990 (1973-08-01), Fischer
patent: 3767931 (1973-10-01), Williams
patent: 3873824 (1975-03-01), Bean
patent: 3892973 (1975-07-01), Coquin
Atomic Energy of Canada Limited
Church Craig E.
Rymek Edward
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