Lightweight quartic-shaped collimator for collecting high energy gamma rays
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United States of America Patent
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Apr 6, 2010
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N/A
app pub date -
Nov 17, 2008
filing date -
Nov 17, 2008
priority date (Note) -
Expired
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Abstract
A collimator incorporating shielding shaped according to the formulawhere y is the minimum thickness of encased shielding needed to shield the collimator from un-collimated radiation entering the collimator at a distance, z, along the longitudinal axis of the collimator, z measured from the bottom of a cylindrical detector, and D is the inner diameter of the collimator as established by the outer diameter of the detector. Select embodiments may be employed for collecting collimated high energy gamma rays from soil using a gamma ray detector.
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