Explore BrainMass

Explore BrainMass

    Solid Angle of Cylindrical Detector and Intrinsic Peak Efficiency

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Find the solid angle subtended by the circular end surface of a cylindrical detector
    (diameter of 10 cm) for a point source located 20 cm from the surface along the
    cylindrical axis.

    Also, assume that this detector has an intrinsic peak efficiency at 1 MeV of 12%. The
    point source emits a 1 MeV gamma ray in 80% of its decays and has an activity of 20
    kBq. Neglecting attenuation between the source and detector, calculate the number of
    counts that will appear under the 1 MeV full-energy peak in the pulse height spectrum
    from the detector over a 100 s count.

    © BrainMass Inc. brainmass.com March 4, 2021, 7:38 pm ad1c9bdddf
    https://brainmass.com/physics/photons/solid-angle-cylindrical-detector-intrinsic-peak-efficiency-113336

    Solution Summary

    This solution contains an annotated diagram and also step-by-step calculations to determine the solid angle of the cylindrical detector using the appropriate cone formula. It also calculates the number of counts that will appear under 1 MeV full-energy peak with more than 100s a count. Brief explanations are included for further topic understanding.

    $2.49

    ADVERTISEMENT