Radiant energy – Automatic/serial detection of similar sources
Patent
1967-09-28
1977-01-11
Borchelt, Archie R.
Radiant energy
Automatic/serial detection of similar sources
250369, G01T 708
Patent
active
040029093
ABSTRACT:
A data analyzing system for scintillation spectrometers of the type for measuring activity levels of samples containing radioactive isotopes and subjected to varying degrees of quench, including methods and apparatus for optimizing counting conditions and thereby improving statistical counting validity irrespective of the degree of quenching present in any given sample, and wherein a measured parameter indicative of the effective quench condition of each sample is utilized to automatically adjust, by preselected preset amounts, the counting window for any given isotope relative to the observed energy spectrum for that isotope. Various methods and apparatus are described which, although suitable for optimizing counting conditions for both multiple-labeled and single-labeled test samples, are particularly effective in creating significantly improved isotope separations when dealing with multiple-labeled samples -- for example, a double-labeled sample containing tritium (.sup.3 H) and carbon-14 (.sup.14 C).
REFERENCES:
patent: 3114835 (1963-12-01), Packard
patent: 3270205 (1966-08-01), Ladd et al.
patent: 3381130 (1968-04-01), Nather
patent: 3428804 (1969-02-01), Comunnetti
Cavanaugh, Jr. Robert E.
Packard Lyle E.
Polic Edward F.
Borchelt Archie R.
Packard Instrument Company Inc.
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