6533b82ffe1ef96bd129517b
RESEARCH PRODUCT
Nuclear spin determination of100mY by collinear laser spectroscopy of optically pumped ions
Ari JokinenBradley ChealJ. BillowesG. TungateTommi EronenPaul CampbellIain MooreK. BaczynskaJuha ÄYstöD. H. ForestF.c. CharlwoodM. RüfferT. Kesslersubject
PhysicsNuclear and High Energy Physicseducation.field_of_studyProton010308 nuclear & particles physicsFissionPopulation01 natural sciencesPhysical Sciences0103 physical sciencesQuadrupoleIon trapAtomic physics010306 general physicsSpin (physics)educationGround stateSpectroscopyComputingMilieux_MISCELLANEOUSdescription
The nuclear spin of the τ1/2 = 0.94 s isomer in 100Y has been determined by collinear laser spectroscopy of optically pumped yttrium fission fragments at the IGISOL facility, JYFL. The isotopes 96, 98, 99, 100Y were produced by the proton-induced fission of natural uranium, and studied on the 4d5s 3D2 (1045 cm−1) → 4d5p 3P1 (32 124 cm−1) transition at 321.67 nm. Enhancement of the population of the metastable 3D2 level was achieved by optically pumping the ground state population via the 5s2 1S0 → 4d5p 1P1 transition at 363.31 nm while the ions were stored in a linear Paul trap. These data, when combined with previous spectroscopic results, give sufficient information for the nuclear spin of 100mY to be determined unambiguously as I = 4. This spin assignment reveals that 100mY has an unexpectedly large dynamic contribution to its quadrupole deformation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-10-01 | Journal of Physics G: Nuclear and Particle Physics |