Lightweight quartic-shaped collimator for collecting high energy gamma rays
US7692154B1 · kind B1 · utility
1Cited by
18References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 17, 2008 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Jan 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.