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PHYSICAL REVIEW C
Volume 74, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.74.034331
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The atomic masses of the neutron-rich krypton isotopes Kr-84,Kr-86-95 have been determined with the tandem Penning trap mass spectrometer ISOLTRAP with uncertainties ranging from 20 to 220 ppb. The masses of the short-lived isotopes Kr-94 and Kr-95 were measured for the first time. The masses of the radioactive nuclides Kr-89 and Kr-91 disagree by 4 and 6 standard deviations, respectively, from the present Atomic-Mass Evaluation database. The resulting modification of the mass surface with respect to the two-neutron separation energies as well as implications for mass models and stellar nucleosynthesis are discussed.
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