Variable-ratio neutron-gamma ray source
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United States of America Patent
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Nov 24, 2009
Grant Date -
Mar 12, 2009
app pub date -
Sep 12, 2007
filing date -
Sep 12, 2007
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Abstract
A variable-ratio neutron-gamma ray source comprises a neutron generator, a shield, a collimator, and an external gamma target. The neutron generator generates neutrons and the shield reduces external radiation exposure. The collimator collimates the neutrons into a neutron beam that traverses the shield. The external gamma target generates a dual neutron-gamma ray beam from the neutron beam, wherein the dual neutron-gamma ray beam has a variable neutron-gamma ratio as a function of a thickness of the external gamma target.
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