6533b85ffe1ef96bd12c0fb8
RESEARCH PRODUCT
Spin-flip? ? decay of even-even deformed nuclei110Ru and112Ru
Heikki PenttiläP.p. JauhoZ JanasJ.m. ParmonenK. RykaczewskiAri JokinenP. TaskinenPeter DendoovenJuha ÄYstöK EskolaM. Leinosubject
PhysicsNuclear and High Energy PhysicsDecay schemeIsotopes of germanium010308 nuclear & particles physics7. Clean energy01 natural sciencesBeta decayNuclear physicsInternal conversionDecay energyDouble beta decay0103 physical sciencesBeta particleAtomic physics010306 general physicsRadioactive decaydescription
Neutron-rich nuclides110Ru and112Ru produced in symmetric fission of238U by 20 MeV protons have been studied at the IGISOL facility by means ofβ-ray,γ-ray and conversion electron spectroscopy. A total of 12 and 6γ-transitions were observed in the decays of110Ru and112Ru, respectively. Multipolarities were determined for a few transitions. The beta decay half-life was determined to be 11.6±0.6 s for110Ru and 1.75±0.07 s for112Ru. As a side product, a new value of 2.1±0.3 s for theβ half-life of the112Rh 1+ state was obtained. The decay energy measured with the plastic scintillator was 2.81 ±0.05 MeV for110Ru and 4.52 ±0.08 MeV for112Ru. The beta decay schemes of110Ru and112Ru isotopes indicate that the main fraction of their beta strength resides in two 0+→1+ spin-flip transitions with their logft values between 4.4 and 4.7. The decay energies and the energies of the 1+ GT states are compared with the macroscopic-microscopic model calculations. The observed GT-strengths are discussed in the framework of the deformed single-particle model.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1991-03-01 | Zeitschrift f�r Physik A: Hadrons and Nuclei |