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Investigation of beta beta decay in (150)Nd and (148) Nd to the excited states of daughter nuclei

Abstract : Double beta decay of (150)Nd and (148)Nd to the excited states of daughter nuclei have been studied using a 400 cm3 low-background HPGe detector and an external source consisting of 3046 g of natural Nd_2O3 powder. The half-life for the two-neutrino double beta decay of (150)Nd to the excited 0+1 state in (150)Sm is measured to be T1/2=1.33+0.36-0.23(stat)+0.27_-0.13}(syst)] 10.20 y. For other (0v + 2v) transitions to the 2^+_1, ^+_2, 2^+_3, and 0^+_2 levels in ^150Sm, limits are obtained at the level of $\sim (2-8)\cdot 10^{20} y. In the case of ^148Nd only limits for the (0\nu + 2\nu) transitions to the 2^+_1, 0^+_1, and 2^+2 excited states in ^148Sm were obtained and are at the level of \sim (4-8)\cdot 10^20 y.
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http://hal.in2p3.fr/in2p3-00394815
Contributor : Virginie Mas <>
Submitted on : Friday, June 12, 2009 - 3:24:15 PM
Last modification on : Saturday, May 29, 2021 - 12:50:03 PM

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A. S. Barabash, Ph. Hubert, A. Nachab, V. I. Umatov. Investigation of beta beta decay in (150)Nd and (148) Nd to the excited states of daughter nuclei. Physical Review C, American Physical Society, 2009, 79, pp.045501. ⟨10.1103/PhysRevC.79.045501⟩. ⟨in2p3-00394815⟩

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