Radiant energy – Invisible radiant energy responsive electric signalling – Neutron responsive means
Patent
1989-08-25
1991-07-02
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Neutron responsive means
2503901, 2504941, 2505051, G01N 2305
Patent
active
050287893
ABSTRACT:
An apparatus for use in neutron radiography has a convergent collimator of moderator material joined coaxially to a divergent collimator made of neutron-absorbing material. An aperture is formed between the collimators. The divergent collimator substantially defines a neutron beam. An imaging plane is disposed within the neutron beam. The convergent collimator has a base which defines a source plane. Neutron-emitting radioisotopes which are a source of neutrons are placed symmetrically about the source plane. Neutron-moderating material is placed between the neutron sources and the aperture. The convergent-divergent shape of the collimators is designed to expose all of the source plane for optimum and uniform thermal neutron irradiation of the imaging plane. The neutron sources are placed within the moderator at a predetermined distance from the source plane to provide maximum thermal neutron flux through the aperture to the imaging plane, while at the same time preventing direct line-of-sight gamma radiation from the neutron sources to the imaging plane.
REFERENCES:
patent: 4582999 (1986-04-01), Dance et al.
patent: 4599515 (1986-07-01), Whittemore
patent: 4853550 (1989-08-01), Schulz
Alger et al., "A High Resolution Thermal-Neutron Radiography Facility", Nucl. Tech., 17 (2), Feb. 1973, pp. 189-192.
J. Stokes et al., A New Accelerator-Based Neutron Radiography System, Instrumentation Research Technology Corporation, Dec. 9, 1981.
Fields Carolyn E.
General Atomics
LandOfFree
System and apparatus for neutron radiography does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and apparatus for neutron radiography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and apparatus for neutron radiography will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1248884