Degeneracy at 1871 keV in Cd112 and implications for neutrinoless double electron capture

K. L. Green, P. E. Garrett, R. A.E. Austin, G. C. Ball, D. S. Bandyopadhyay, S. Colosimo, D. Cross, G. A. Demand, G. F. Grinyer, G. Hackman, W. D. Kulp, K. G. Leach, A. C. Morton, C. J. Pearson, A. A. Phillips, M. A. Schumaker, C. E. Svensson, J. Wong, J. L. Wood, S. W. Yates

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33 Scopus citations


High-statistics β-decay measurements of Ag112 and In112 were performed to study the structure of the Cd112 nucleus. The precise energies of the doublet of levels at 1871 keV, for which the 0+ member has been suggested as a possible daughter state following neutrinoless double electron capture of Sn112, were determined to be 1871.137(72) keV (04+ level) and 1870.743(54) keV (42+ level). The nature of the 04+ level, required for the calculation of the nuclear matrix element that would be needed to extract a neutrino mass from neutrinoless double electron capture to this state, is suggested to be of intruder origin.

Original languageEnglish
Article number032502
JournalPhysical Review C - Nuclear Physics
Issue number3
StatePublished - Sep 9 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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