The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 1995
Filed:
Oct. 29, 1993
Charles L Dodson, Jr, Orange, CA (US);
Beckman Instruments, Inc., Fullerton, CA (US);
Abstract
Methods and apparatus are provided for identifying a radionuclide in a liquid sample containing at least one unknown radionuclide, in which specific properties which are essentially linear over extended quench ranges are employed as the primary basis for identifying the radionuclide. For example, the endpoint or maximum energy of a sample is related to Mantel's average energy or a property proportional to the average energy (such as isotope center number) in order to establish characteristic relationships for radionuclides of interest; comparison of measured values with characteristic values for specific radionuclides may in some cases be sufficient to identify a radionuclide unambiguously. The relationships between isotope center number, full width of the spectrum at half its maximum height and maximum energy may be exploited to provide a pair of characteristic equations for each radionuclide. In those instances where some ambiguity might arise, other features of the spectrum (such as maximum peak height or number of peaks present) are employed to distinguish between nuclides which are not clearly identified by the first step.