6533b86dfe1ef96bd12ca916
RESEARCH PRODUCT
Isomeric fission yield ratios for odd-mass Cd and In isotopes using the Phase-Imaging Ion-Cyclotron-Resonance technique
Dmitrii NesterenkoHeikki PenttiläTommi EronenMikael ReponenIain MooreAnu KankainenAli Al-adiliMichael ÖSterlundAri JokinenVasileios RakopoulosMattias LantzStephan PompSami Rinta-antilaL. CaneteAntoine De RoubinAndrea MatteraM. VilenAndreas Solderssubject
Nuclear TheoryAnalytical chemistryFOS: Physical sciencesFission product yield01 natural sciences7. Clean energySubatomär fysikydinreaktiotPhysics::Plasma Physics0103 physical sciencesSubatomic PhysicsPhysics::Atomic and Molecular ClustersfissionNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentNuclear Experimentnuclear reactionsPhysicsIsotopeta114010308 nuclear & particles physics3. Good healthfissioPhase imagingisomer decaysydinfysiikkaIon cyclotron resonancedescription
Isomeric yield ratios for the odd-$A$ isotopes of $^{119-127}$Cd and $^{119-127}$In from 25-MeV proton-induced fission on natural uranium have been measured at the JYFLTRAP double Penning trap, by employing the Phase-Imaging Ion-Cyclotron-Resonance technique. With the significantly improved mass resolution of this novel method isomeric states separated by 140 keV from the ground state, and with half-lives of the order of 500 ms, could be resolved. This opens the door for obtaining new information on low-lying isomers, of importance for nuclear structure, fission and astrophysics. In the present work the experimental isomeric yield ratios are used for the estimation of the root-mean-square angular momentum ($J_\mathrm{rms}$) of the primary fragments. The results show a dependency on the number of unpaired protons and neutrons, where the odd-$Z$ In isotopes carry larger angular momenta. The deduced values of $J_\mathrm{rms}$ display a linear relationship when compared with the electric quadrupole moments of the fission products.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-11-12 |