Reducing noise in uranium exploration
US4063087A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Aug 18, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method and apparatus are described for reducing or removing the background noise caused by thoron gas (.sup.220 Rn) in uranium exploration conducted by the detection of radon gas (.sup.222 Rn) emanating from the ground. This is accomplished by the use of a number of alpha particle detectors, each of which is disposed in a protective enclosure. A barrier which permits, but deliberately retards, the passage therethrough of gases is disposed in the path to be traversed before such gases can reach the alpha particle detector. The increase in the transit time made necessary by requiring soil gases to move through the barrier should be sufficiently long to allow the decay of most of the thoron, thereby eliminating its contribution to the total signal reflected at the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.