Radiant energy – Invisible radiant energy responsive electric signalling – Neutron responsive means
Patent
1977-04-18
1979-01-09
Smith, Alfred E.
Radiant energy
Invisible radiant energy responsive electric signalling
Neutron responsive means
G01T 300
Patent
active
041340167
ABSTRACT:
An improved cold neutron radiographic apparatus and method are disclosed wherein neutron temperature is matched to the specific material to be examined. This can be done, in one embodiment, by placing a radioactive source of neutrons, such as californium 252, in a moderator such as solid methane and using a cryogenic refrigeration system to cool the moderator to any pre-selected cryogenic temperature.
REFERENCES:
patent: 3496358 (1970-02-01), Barton
patent: 3659106 (1972-04-01), Cason
Brook David E.
Helix Technology Corporation
Howell Janice A.
Smith Alfred E.
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