High-precision mass measurements of nickel, copper, and gallium isotopes and the purported shell closure at N=40

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dc.creatorGuenaut, C.
dc.creatorAudi, G.
dc.creatorBeck, D.
dc.creatorBlaum, K.
dc.creatorBollen, G.
dc.creatorDelahaye, P.
dc.creatorHerfurth, F.
dc.creatorKellerbauer, A.
dc.creatorKluge, H. -J.
dc.creatorLibert, J.
dc.creatorLunney, D.
dc.creatorSchwarz, S.
dc.creatorSchweikhard, L.
dc.creatorYazidjian, C.
dc.date2007-01-22
dc.date.accessioned2026-07-07T10:22:34Z
dc.date.available2026-07-07T10:22:34Z
dc.descriptionHigh-precision mass measurements of more than thirty neutron-rich nuclides around the Z=28 closed proton shell were performed with the triple-trap mass spectrometer ISOLTRAP at ISOLDE/CERN to address the question of a possible neutron shell closure at N=40. The results, for 57,60,64-69Ni (Z=28), 65-74,76Cu (Z=29), and 63-65,68-78Ga (Z=31), have a relative uncertainty of the order of 10^8. In particular, the masses of 72-74,76Cu have been measured for the first time. We analyse the resulting mass surface for signs of magicity, comparing the behavior of N=40 to that of known magic numbers and to mid-shell behavior. Contrary to nuclear spectroscopy studies, no indications of a shell or sub-shell closure are found for N=40.
dc.description14 figures
dc.identifierhttps://arxiv.org/abs/nucl-ex/0701029
dc.identifierhttp://arxiv.org/abs/nucl-ex/0701029
dc.identifierPhys.Rev.C75:044303,2007
dc.identifierdoi:10.1103/PhysRevC.75.044303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175557
dc.subjectNuclear Experiment
dc.titleHigh-precision mass measurements of nickel, copper, and gallium isotopes and the purported shell closure at N=40
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