True coincidence summing correction and total efficiency computation for radionuclide spectroscopy analysis
US8227761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Jul 26, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/36
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method, system, and software for calculating the true coincidence summing effects for radionuclide spectroscopy analysis. A set of equations which can be implemented with a stored computer program performs calculations to correct the spectroscopic analysis data for gamma-gamma coincidence events, gamma-X-ray coincidence events, as well as gamma-annihilation photon coincidence events. The net gamma-ray, KX-ray and annihilation photon summing-out probabilities for the analytic gamma-ray is the total summing-out probability from all gamma-ray summing-out chains subtracted by the total summing-out probability from all gamma-ray sub-cascade chains involving the analytic gamma-ray. A total efficiency calculation is performed to eliminate the need for using radioactive sources to create summing specific calibration measurements and for increased accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.