Title of article :
Core-excitations in 209Po
Original Research Article
Author/Authors :
A.R. Poletti، نويسنده , , G.D. Dracoulis، نويسنده , , A.P. Byrne، نويسنده , , A.E. Stuchbery، نويسنده , , B. Fabricius، نويسنده , , T. KIBEDI، نويسنده , , P.M. Davidson، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Abstract :
The properties of high spin states in 209Po have been investigated using the 204Hg (9Be,4n) 209Po reaction at a bombarding energy of 62 MeV. Decay properties for states in 209Po up to an excitation energy of 8392 keV and spins up to J=(47/2) have been deduced. The mean life of the level at 4266 keV was determined as 172(5) ns and a limit of <15 ns was determined for that at 5504 keV. The level scheme is compared with predictions of multi-particle shell model calculations. The lowest core excited state is confirmed to be the 31/2− state at 4266 keV. Another core excited state lies at 5356 keV, while above 5.5 MeV the yrast line is exclusively composed of such excitations.
Keywords :
E=55–65 MeV , Semi-empirical shell model , I?(?) , Measured ??(t) , E? , T) , Linear polarisation , 209Po deduced high spin levels J , ? , 4n)209Po , Calculated levels , Enriched target , Pulsed beam , Compton suppressed detectors , Ge hyper pure detectors in linear polarimeter , I?(E , NUCLEAR REACTIONS 204Hg(9Be , NUCLEAR STRUCTURE 209Po , T1/2
Journal title :
Nuclear physics A
Journal title :
Nuclear physics A
