6533b859fe1ef96bd12b7926

RESEARCH PRODUCT

Coulomb shifts and shape changes in the mass 70 region

C. ScholeyP. J. DaviesC. J. ListerJ. ThomsonJuha SorriMatthew Richard DimmockJanne PakarinenPaul GreenleesM. A. BentleyJuha UusitaloMatti LeinoD. G. JenkinsA. N. SteerM. NymanN. S. PattabiramanBo CederwallP. A. ButlerPeter M. JonesD. T. JossJan SarénRauno JulinBaharak HadiniaR. WadsworthS. JuutinenT. GrahnB. S. Nara SinghPanu RahkilaR. GloverM. Sandzelius

subject

PhysicsNuclear and High Energy PhysicsGamma rayNuclear structureFOS: Physical sciencesElectronRecoilExcited stateDouble beta decayCoulombSensitivity (control systems)Atomic physicsNuclear Experiment (nucl-ex)Nuclear Experiment

description

The technique of recoil beta tagging has been developed which allows prompt gamma decays in nuclei from excited states to be correlated with electrons from their subsequent short-lived beta decay. This technique is ideal for studying nuclei very far from stability and improves in sensitivity for very short-lived decays and for high decay Q-values. The method has allowed excited states in 78Y to be observed for the first time, as well as an extension in the knowledge of T=1 states in 74Rb. From this new information it has been possible to compare Coulomb energy differences (CED) between T=1 states in 70Br/70Se, 74Rb/74Kr, and 78Y/78Sr. The A=70 CED exhibit an anomalous behavior which is inconsistent with all other known CED. This behavior may be accounted for qualitatively in terms of small variations in the Coulomb energy arising from shape changes.

yearjournalcountryeditionlanguage
2007-06-15
https://dx.doi.org/10.48550/arxiv.0706.3365