6533b825fe1ef96bd12825cb
RESEARCH PRODUCT
First identification of rotational band structures in Re-166(75)91
Hj LiM DoncelM PatialB CederwallT BackU JakobssonK AuranenS BoenigM DrummondT GrahnP GreenleesA HerzanDt JossR JulinS JuutinenJ KonkiT KroellM LeinoC McpeakeD O'donnellRd PageJ PakarinenJ PartanenP PeuraP RahkilaP RuotsalainenM SandzeliusJ SarenB SaygiC ScholeyJ SorriS StolzeMj TaylorA ThornthwaiteJ UusitaloZg Xiaosubject
total data readouthigh-spinsignature inversionnucleimass regionshape coexistenceNuclear Experimentspectrocopydescription
Excited states in the odd-odd, highly neutron-deficient nucleus 166Re have been investigated via the 92Mo(78Kr, 3p1n) 166Re reaction. Prompt γ rays were detected by the JUROGAM II γ -ray spectrometer, and the recoiling fusion-evaporation products were separated by the recoil ion transport unit (RITU) gas-filled recoil separator and implanted into the Gamma Recoil Electron Alpha Tagging spectrometer located at the RITU focal plane. The tagging and coincidence techniques were applied to identify the γ -ray transitions in 166Re, revealing two collective, strongly coupled rotational structures, for the first time. The more strongly populated band structure is assigned to the πh11/2[514]9/2− ⊗ νi13/2[660]1/2+ Nilsson configuration, while the weaker structure is assigned to be built on a two-quasiparticle state of mixed πh11/2[514]9/2− ⊗ ν[h9/2f7/2]3/2− character. The configuration assignments are based on the electromagnetic characteristics and rotational properties, in comparison with predictions from total Routhian surface and particle-rotor model calculations. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-07-16 |