6533b81ffe1ef96bd1278479

RESEARCH PRODUCT

Evidence for oblate structure inPb186

C. ScholeyM. NymanRauno JulinKris HeydeRobert PageIain DarbyPanu RahkilaP. M. RaddonJuha UusitaloV. HellemansF. Johnston-theasbyPaavo NieminenR. WadsworthSakari JuutinenAri Pekka LeppänenT. GrahnPeter M. JonesPaul GreenleesHeikki KettunenT. EnqvistMatti LeinoJanne PakarinenS. Eeckhaudt

subject

PhysicsNuclear physicsNuclear and High Energy PhysicsSpectrometerYrastStructure (category theory)Nuclear structureGamma spectroscopyInteracting boson modelRadioactive decayCoincidence

description

In-beam $\ensuremath{\gamma}\ensuremath{\gamma}$ coincidence data have been collected for $^{186}\mathrm{Pb}$ by combining the JUROGAM Ge-detector array and the GREAT spectrometer with the RITU gas-filled recoil separator for recoil-decay tagging measurements. In addition to the known prolate yrast band in $^{186}\mathrm{Pb}$, these data have enabled a new low-lying side band to be identified. Based on the analysis of its decay pattern and comparison with Interacting Boson Model (IBM) calculations, the new band is associated with an oblate shape.

https://doi.org/10.1103/physrevc.72.011304