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Quenching curves: solutions by second-order polynomial regression

G H Barrows, E Samols, B Becker

    Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
    |November 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

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    Automate beta-scintillation quench corrections with a simple calculator. This method uses a polynomial fit to accurately determine efficiency from channel ratios in experimental settings.

    Area of Science:

    • Radiochemistry
    • Analytical Chemistry
    • Nuclear Instrumentation

    Background:

    • Beta-scintillation counting is a common technique for measuring radioactivity.
    • Quenching significantly affects the accuracy of these measurements.
    • Accurate quench correction is crucial for reliable results.

    Purpose of the Study:

    • To develop an inexpensive and practical automated method for quench correction in beta-scintillation experiments.
    • To implement a computational approach using readily available equipment.

    Main Methods:

    • Utilized a table-top calculator for automated computations.
    • Employed a second-order polynomial fit (ax² + bx + c = y).
    • Used the channel A/B ratio from known quench standards to define efficiency (y).

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    Main Results:

    • The developed approach provides automated quench correction.
    • Excellent agreement was observed between measured values and the polynomial fit for most experimental A/B ratios.
    • The method is practical and cost-effective for routine laboratory use.

    Conclusions:

    • The described method offers an efficient and accurate solution for quench correction in beta-scintillation counting.
    • This automated approach enhances the reliability of radioactivity measurements.
    • The technique is accessible for laboratories with limited resources.