Q value and half-life of double-electron capture in 184Os

C. Smorra, T. R. Rodríguez, T. Beyer, K. Blaum, M. Block, Ch E. Düllmann, K. Eberhardt, M. Eibach, S. Eliseev, K. Langanke, G. Martínez-Pinedo, S. Nagy, W. Nörtershäuser, D. Renisch, V. M. Shabaev, I. I. Tupitsyn, N. A. Zubova

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Abstract

184Os has been excluded as a promising candidate for the search of neutrinoless double-electron capture. High-precision mass measurements with the Penning-trap mass spectrometer TRIGA-TRAP result in a marginal resonant enhancement with Δ=-8.89(58) keV excess energy to the 1322.152(22) keV 0+ excited state in 184W. State-of-the-art energy density functional calculations are applied for the evaluation of the nuclear matrix elements to the excited states predicting a strong suppression due to the large deformation of mother and daughter states. The half-life of the transition exceeds T 1/2 (184Os)≥1.3×1029 yr for an effective neutrino mass of 1 eV.

Original languageEnglish
Article number044604
JournalPhysical Review C - Nuclear Physics
Volume86
Issue number4
DOIs
Publication statusPublished - Oct 1 2012

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electron capture
half life
mass spectrometers
excitation
neutrinos
flux density
retarding
traps
augmentation
evaluation
matrices
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Smorra, C., Rodríguez, T. R., Beyer, T., Blaum, K., Block, M., Düllmann, C. E., ... Zubova, N. A. (2012). Q value and half-life of double-electron capture in 184Os. Physical Review C - Nuclear Physics, 86(4), [044604]. https://doi.org/10.1103/PhysRevC.86.044604

Q value and half-life of double-electron capture in 184Os. / Smorra, C.; Rodríguez, T. R.; Beyer, T.; Blaum, K.; Block, M.; Düllmann, Ch E.; Eberhardt, K.; Eibach, M.; Eliseev, S.; Langanke, K.; Martínez-Pinedo, G.; Nagy, S.; Nörtershäuser, W.; Renisch, D.; Shabaev, V. M.; Tupitsyn, I. I.; Zubova, N. A.

In: Physical Review C - Nuclear Physics, Vol. 86, No. 4, 044604, 01.10.2012.

Research output: Contribution to journalArticle

Smorra, C, Rodríguez, TR, Beyer, T, Blaum, K, Block, M, Düllmann, CE, Eberhardt, K, Eibach, M, Eliseev, S, Langanke, K, Martínez-Pinedo, G, Nagy, S, Nörtershäuser, W, Renisch, D, Shabaev, VM, Tupitsyn, II & Zubova, NA 2012, 'Q value and half-life of double-electron capture in 184Os', Physical Review C - Nuclear Physics, vol. 86, no. 4, 044604. https://doi.org/10.1103/PhysRevC.86.044604
Smorra C, Rodríguez TR, Beyer T, Blaum K, Block M, Düllmann CE et al. Q value and half-life of double-electron capture in 184Os. Physical Review C - Nuclear Physics. 2012 Oct 1;86(4). 044604. https://doi.org/10.1103/PhysRevC.86.044604
Smorra, C. ; Rodríguez, T. R. ; Beyer, T. ; Blaum, K. ; Block, M. ; Düllmann, Ch E. ; Eberhardt, K. ; Eibach, M. ; Eliseev, S. ; Langanke, K. ; Martínez-Pinedo, G. ; Nagy, S. ; Nörtershäuser, W. ; Renisch, D. ; Shabaev, V. M. ; Tupitsyn, I. I. ; Zubova, N. A. / Q value and half-life of double-electron capture in 184Os. In: Physical Review C - Nuclear Physics. 2012 ; Vol. 86, No. 4.
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