Shape transition in the neutron rich sodium isotopes

X. Campi; H. Flocard; A. K. Kerman; S. Koonin

doi:10.1016/0375-9474(75)90065-2

Shape transition in the neutron rich sodium isotopes

X. Campi, H. Flocard, A. K. Kerman, S. Koonin

Research output: Contribution to journal › Article › peer-review

Abstract

Mass spectrometer measurements of the neutron rich sodium isotopes show a sudden increase at ³¹Na in the values of the two-neutron separation energies. The spherical shell model naturally predicts a sudden decrease at ³²Na after the N = 20 shell closure. We propose that the explanation for this disagreement lies in the fact that sodium isotopes in this mass region are strongly deformed due to the filling of negative parity orbitais from the 1f_{7 2} shell. Hartree-Fock calculations are presented in support of this conjecture.

Original language	English (US)
Pages (from-to)	193-205
Number of pages	13
Journal	Nuclear Physics, Section A
Volume	251
Issue number	2
DOIs	https://doi.org/10.1016/0375-9474(75)90065-2
State	Published - Oct 20 1975

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Nuclear and High Energy Physics

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10.1016/0375-9474(75)90065-2

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title = "Shape transition in the neutron rich sodium isotopes",

abstract = "Mass spectrometer measurements of the neutron rich sodium isotopes show a sudden increase at 31Na in the values of the two-neutron separation energies. The spherical shell model naturally predicts a sudden decrease at 32Na after the N = 20 shell closure. We propose that the explanation for this disagreement lies in the fact that sodium isotopes in this mass region are strongly deformed due to the filling of negative parity orbitais from the 1f 7 2 shell. Hartree-Fock calculations are presented in support of this conjecture.",

author = "X. Campi and H. Flocard and Kerman, {A. K.} and S. Koonin",

note = "Funding Information: t Laboratoire associ6 au CNRS. t~ National Science Foundation Graduate Fellow. tit This work is supported in part through funds provided by the AEC under contract AT (11-1)-3069.",

year = "1975",

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doi = "10.1016/0375-9474(75)90065-2",

language = "English (US)",

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T1 - Shape transition in the neutron rich sodium isotopes

AU - Campi, X.

AU - Flocard, H.

AU - Kerman, A. K.

AU - Koonin, S.

N1 - Funding Information: t Laboratoire associ6 au CNRS. t~ National Science Foundation Graduate Fellow. tit This work is supported in part through funds provided by the AEC under contract AT (11-1)-3069.

PY - 1975/10/20

Y1 - 1975/10/20

N2 - Mass spectrometer measurements of the neutron rich sodium isotopes show a sudden increase at 31Na in the values of the two-neutron separation energies. The spherical shell model naturally predicts a sudden decrease at 32Na after the N = 20 shell closure. We propose that the explanation for this disagreement lies in the fact that sodium isotopes in this mass region are strongly deformed due to the filling of negative parity orbitais from the 1f 7 2 shell. Hartree-Fock calculations are presented in support of this conjecture.

AB - Mass spectrometer measurements of the neutron rich sodium isotopes show a sudden increase at 31Na in the values of the two-neutron separation energies. The spherical shell model naturally predicts a sudden decrease at 32Na after the N = 20 shell closure. We propose that the explanation for this disagreement lies in the fact that sodium isotopes in this mass region are strongly deformed due to the filling of negative parity orbitais from the 1f 7 2 shell. Hartree-Fock calculations are presented in support of this conjecture.

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Shape transition in the neutron rich sodium isotopes

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