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Journal Article

The binding energy of 79Cu: probing the structure of the doubly magic 78Ni from only one proton away

MPS-Authors
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Atanasov,  Dinko
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum,  Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Kreim,  Susanne Waltraud
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Manea,  Vladimir
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
CERN Geneva, 1211 Geneva, Switzerland;

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Wolf,  Robert
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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https://link.aps.org/doi/10.1103/PhysRevLett.119.192502
(Publisher version)

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Citation

Welker, A., Althubiti, N. A. S., Atanasov, D., Blaum, K., Cocolios, T. E., Herfurth, F., et al. (2017). The binding energy of 79Cu: probing the structure of the doubly magic 78Ni from only one proton away. Physical Review Letters, 119(19): 192502. doi:10.1103/PhysRevLett.119.192502.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-3166-B
Abstract
The masses of the neutron-rich copper isotopes 75–79Cu are determined using the precision mass spectrometer ISOLTRAP at the CERN-ISOLDE facility. The trend from the new data differs significantly from that of previous results, offering a first accurate view of the mass surface adjacent to the Z=28, N=50 nuclide 78Ni and supporting a doubly magic character. The new masses compare very well with large-scale shell-model calculations that predict shape coexistence in a doubly magic 78Ni and a new island of inversion for Z<28. A coherent picture of this important exotic region begins to emerge where excitations across Z=28 and N=50 form a delicate equilibrium with a spherical mean field.