6533b824fe1ef96bd127fec9

RESEARCH PRODUCT

Critical-Point Boundary for the Nuclear Quantum Phase Transition NearA=100from Mass Measurements ofKr96,97

Stefan SchwarzF. HerfurthS. NaimiKai ZuberD. BeckG. AudiAlexander HerlertD. NeidherrMagda KowalskaMarco RosenbuschLutz SchweikhardM. BreitenfeldtCh. BöhmD. LunneyCh. BorgmannKlaus BlaumSebastian GeorgeSusanne Kreim

subject

Quantum phase transitionPhysicsIsotopeSpectrometer010308 nuclear & particles physicsGeneral Physics and AstronomyIsotopes of krypton01 natural sciencesISOLTRAPCritical point (thermodynamics)0103 physical sciencesGamma spectroscopyAtomic physicsNuclear Experiment010306 general physicsSpectroscopy

description

Mass measurements of (96,97)Kr using the ISOLTRAP Penning-trap spectrometer at CERN-ISOLDE are reported, extending the mass surface beyond N=60 for Z=36. These new results show behavior in sharp contrast to the heavier neighbors where a sudden and intense deformation is present. We interpret this as the establishment of a nuclear quantum phase transition critical-point boundary. The new masses confirm findings from nuclear mean-square charge-radius measurements up to N=60 but are at variance with conclusions from recent gamma-ray spectroscopy.

yearjournalcountryeditionlanguage
2010-07-16Physical Review Letters
https://doi.org/10.1103/physrevlett.105.032502