6533b835fe1ef96bd129e924

RESEARCH PRODUCT

β−decay of the neutron-rich isotope215Pb

S. EeckhaudtIvan BorzovV. N. FedoseyevM. GórskaUlli KösterA. PłochockiK. Van De VelG. HuberW. KurcewiczP. Van DuppenJ. KurpetaH. GraweH. De WitteJoakim CederkällS. FranchooA. De SmetD. V. FedorovZ. JanasMark HuyseLeonid WeissmanAndrei Andreyev

subject

PhysicsNuclear and High Energy PhysicsDecay schemeIsotope010308 nuclear & particles physicsLaser01 natural sciencesBeta decaylaw.inventionNuclear physicslawIonizationDouble beta decayExcited state0103 physical sciencesNeutronAtomic physicsNuclear Experiment010306 general physics

description

This Brief Report reports on the first observation of the β--delayed γ decay of 215Pb, feeding states in 215Bi. The 215Pb beam was produced using resonant laser ionization and mass separated at the ISOLDE-CERN on-line mass separator. This ensured clean identification of the γ rays as belonging to the decay of 215Pb or its β-decay daughters. A half-life of 147(12) s was measured for the 215Pb β decay and a level scheme for the daughter nucleus 215Bi is proposed, resulting in an extended systematics of the excited states of the neutron-rich Bi isotopes.

https://doi.org/10.1103/physrevc.87.067303