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Precise conversion electron intensities of low energy gamma transitions for efficiency calibration of electron
K Vijay Sai1, K Madhusudhana Rao2, E Rajasekhar3
1Laboratories for Nuclear Research, Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, A.P, India.
Abstract:
Precise energies and relative intensities of gamma transitions and conversion electrons in the electron capture decay of 153Gd have been determined independently with our well-tested and optimized gamma and electron spectrometers - a large-volume (60 cc) HPGe detector and a mini-orange electron transporter paired to a Si(Li) detector, respectively. The experimental internal conversion coefficients of the gamma transitions in 153Eu have been determined using Normalized Peak to Gamma method and compared with the theoretical values adopted by Nuclear Data Sheets to assign multipolarities of all the transitions. The precise internal conversion electron intensities of the low energy transitions can be used as standards for calibration purposes of electron detectors and spectrometers.
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