Hyperfine Interactions

, Volume 223, Issue 1–3, pp 201–206 | Cite as

Decay studies for neutrino physics

Electron capture decays of 100Tc and 116In
  • A. García
  • S. Sjue
  • E. Swanson
  • C. Wrede
  • D. Melconian
  • A. Algora
  • I. Ahmad
Article

Abstract

Both 100Mo and 116Cd are zero-neutrino double-β-decay candidates with Jπ = 0 +  and the ground states of the respective intermediate nuclei, 100Tc and 116In, have Jπ = 1 + . This makes it possible to measure these matrix elements, which turn out to provide a valuable benchmark for testing models. The electron-capture (EC) decay of 100Tc can also be used to directly determine the efficiency of a potential neutrino detector. However, the experimental determinations of the EC decay branches of interest are challenging because they are only small fractions of the main decays and co-produced radioactivities contribute significant background counts in the regions of interest. This article summarizes our work at Jyväskylä, where we have taken advantage of the high-purity beams produced at IGISOL in combination with JYFLTRAP to achieve significant improvements in the determinations of the EC branches of 100Tc and 116In.

Keywords

Neutrinos Double-beta decay Electron-capture decay Nuclear structure 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • A. García
    • 1
  • S. Sjue
    • 1
  • E. Swanson
    • 1
  • C. Wrede
    • 1
    • 2
  • D. Melconian
    • 3
  • A. Algora
    • 4
  • I. Ahmad
    • 5
  1. 1.CENPAUniversity of WashingtonSeattleUSA
  2. 2.Department of Physics and Astronomy and National Superconducting Cyclotron LaboratoryMichigan State UniversityEast LansingUSA
  3. 3.Texas A&M UniversityCollege StationUSA
  4. 4.Instituto de Fisica CorpuscularUniversity of ValenciaValenciaSpain
  5. 5.Argonne National LaboratoryArgonneUSA

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