The European Physical Journal A

, 42:171

Search for double- \( \beta\) decays of 96Ru and 104Ru by ultra-low background HPGe \( \gamma\) spectrometry

  • P. Belli
  • R. Bernabei
  • F. Cappella
  • R. Cerulli
  • F. A. Danevich
  • S. d’Angelo
  • A. Incicchitti
  • M. Laubenstein
  • O. G. Polischuk
  • D. Prosperi
  • V. I. Tretyak
Regular Article - Experimental Physics

DOI: 10.1140/epja/i2009-10867-5

Cite this article as:
Belli, P., Bernabei, R., Cappella, F. et al. Eur. Phys. J. A (2009) 42: 171. doi:10.1140/epja/i2009-10867-5

Abstract

A search for double-\( \beta\) processes in 96Ru and 104Ru was realized in the underground Gran Sasso National Laboratories of the INFN (Italy) with the help of ultra-low background HPGe \( \gamma\) spectrometry. After 158h of data taking with 473g ruthenium sample, new improved limits on double-beta processes in 96Ru have been established on the level of 1018-1019yr. For the first time the double-beta decay of 104Ru to the 2+1 excited level of 104Pd has been restricted as T1/2 > 3.5×1019 yr.

PACS

23.40.-s \( \beta\) decay; double \( \beta\) decay; electron and muon capture27.60.+j 90 \( \leq\)A\( \leq\) 149

Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • P. Belli
    • 1
  • R. Bernabei
    • 1
  • F. Cappella
    • 2
  • R. Cerulli
    • 3
  • F. A. Danevich
    • 4
  • S. d’Angelo
    • 1
  • A. Incicchitti
    • 2
  • M. Laubenstein
    • 3
  • O. G. Polischuk
    • 4
  • D. Prosperi
    • 2
  • V. I. Tretyak
    • 4
  1. 1.Dipartimento di FisicaUniversità di Roma “Tor Vergata” and INFN, Sezione di Roma “Tor Vergata”RomaItaly
  2. 2.Dipartimento di FisicaUniversità di Roma “La Sapienza” and INFN, Sezione di RomaRomaItaly
  3. 3.INFNLaboratori Nazionali del Gran SassoAssergi (Aq)Italy
  4. 4.Institute for Nuclear ResearchKyivUkraine