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EC-decay of 133Ba revisited by electron-gamma spectroscopy

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Abstract

Internal conversion electron and gamma-ray spectroscopy measurements were carried out on the 10.551 y 133Ba electron-capture decay with our electron and gamma spectrometers—a mini-orange electron transporter paired to a Si(Li) detector and a large-volume HPGe detector, respectively. The relative and absolute gamma-ray intensities of all the nine transitions in 133Cs were determined. We also report the relative conversion intensities of eighteen conversion lines and their corresponding internal conversion coefficients (ICCs), four of which are being reported for the first time. Transition intensity balance at each energy level, showed that the measured values are self-consistent. This exhaustive dataset of gamma-ray intensities, internal conversion electron intensities and the ICCs that have low uncertainty, will be highly valuable for the purposes of energy and efficiency calibration of semiconductor gamma ray detectors and electron spectrometers.

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Acknowledgements

The authors express their gratitude to the Sri Sathya Sai Institute of Higher Learning, for providing all the laboratory and instrument facilities for undertaking this research work.

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This research work did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

  1. Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Anantapur, A.P, 515134, India

    S. Deepa, K. Vijay Sai, Dwaraka Rani Rao & K. Venkataramaniah

  2. Vignan’s Institute of Information Technology, Visakhapatnam, A.P, 530049, India

    K. Madhusudhana Rao

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  1. S. Deepa
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Deepa, S., Vijay Sai, K., Rao, D. et al. EC-decay of 133Ba revisited by electron-gamma spectroscopy. J Radioanal Nucl Chem 328, 1001–1010 (2021). https://doi.org/10.1007/s10967-021-07731-x

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