Searching for the $\beta^+$EC and EC/EC Decays of $^{74}$Se

Searching for the $\beta^+$EC and EC/EC Decays of $^{74}$Se

Double beta decay (β$^{+}$EC, EC/EC) of $^{74}$Se was investigated at the Modane underground laboratory (LSM, France; 4800 m of water equivalent) using the OBELIX ultralow-background HPGe detector with a sensitive volume of 600 cm$^{3}$ and a sample of natural selenium with a mass of 1.6 kg containi...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2020-08, Vol.84 (8), p.974-978
Main Authors: Rukhadze, N.I., Barabash, A.S., Brudanin, V.B., Klimenko, A.A., Konovalov, S.I., Rakhimov, A.V., Rukhadze, E.N., Shitov, Yu. A., Stekl, I., Umatov, V.I., Warot, G.
Format: Article
Language:eng
Subjects:
Nuclear Experiment
Physics
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Summary:Double beta decay (β$^{+}$EC, EC/EC) of $^{74}$Se was investigated at the Modane underground laboratory (LSM, France; 4800 m of water equivalent) using the OBELIX ultralow-background HPGe detector with a sensitive volume of 600 cm$^{3}$ and a sample of natural selenium with a mass of 1.6 kg containing ~0.89% (~14.24 g) of $^{74}$Se. The new experimental limits for β$^{+}$EC and EC/EC decays of $^{74}$Se to ground 0$^{+}$ and excited $2_{1}^{ + },$ 596 keV, and $2_{2}^{ + },$ 1204 keV states of $^{74}$Ge, were obtained from experimental data accumulated over 135 days.
ISSN:1062-8738
1934-9432