Collapse of the N=28 shell closure in S42i

B. Bastin, S. Grévy, D. Sohler, O. Sorlin, Zs. S. Dombrádi, N. L. Achouri, J. C. Angélique, F. Azaiez, D. Baiborodin, R. Borcea, C. Bourgeois, A. Buta, A. Bürger, R. Chapman, J. C. Dalouzy, Z. Dlouhy, A. Drouard, Z. Elekes, S. Franchoo, S. Iacob & 17 others B. Laurent, M. Lazar, X. Liang, E. Liénard, J. Mrazek, L. Nalpas, F. Negoita, N. A. Orr, Y. Penionzhkevich, Zs Podolyák, F. Pougheon, P. Roussel-Chomaz, M. G. Saint-Laurent, M. Stanoiu, I. Stefan, F. Nowacki, A. Poves

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Abstract

The energies of the excited states in very neutron-rich S42i and P41,43 have been measured using in-beam γ-ray spectroscopy from the fragmentation of secondary beams of S42,44 at 39AMeV. The low 2+ energy of S42i, 770(19) keV, together with the level schemes of P41,43, provides evidence for the disappearance of the Z=14 and N=28 spherical shell closures, which is ascribed mainly to the action of proton-neutron tensor forces. New shell model calculations indicate that S42i is best described as a well-deformed oblate rotor.

Original languageEnglish
Article number022503
JournalPhysical Review Letters
Volume99
Issue number2
DOIs
Publication statusPublished - Jul 12 2007

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closures
neutrons
spherical shells
rotors
rays
fragmentation
tensors
protons
energy
spectroscopy
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Bastin, B., Grévy, S., Sohler, D., Sorlin, O., Dombrádi, Z. S., Achouri, N. L., ... Poves, A. (2007). Collapse of the N=28 shell closure in S42i. Physical Review Letters, 99(2), [022503]. https://doi.org/10.1103/PhysRevLett.99.022503

Collapse of the N=28 shell closure in S42i. / Bastin, B.; Grévy, S.; Sohler, D.; Sorlin, O.; Dombrádi, Zs. S.; Achouri, N. L.; Angélique, J. C.; Azaiez, F.; Baiborodin, D.; Borcea, R.; Bourgeois, C.; Buta, A.; Bürger, A.; Chapman, R.; Dalouzy, J. C.; Dlouhy, Z.; Drouard, A.; Elekes, Z.; Franchoo, S.; Iacob, S.; Laurent, B.; Lazar, M.; Liang, X.; Liénard, E.; Mrazek, J.; Nalpas, L.; Negoita, F.; Orr, N. A.; Penionzhkevich, Y.; Podolyák, Zs; Pougheon, F.; Roussel-Chomaz, P.; Saint-Laurent, M. G.; Stanoiu, M.; Stefan, I.; Nowacki, F.; Poves, A.

In: Physical Review Letters, Vol. 99, No. 2, 022503, 12.07.2007.

Research output: Contribution to journalArticle

Bastin, B, Grévy, S, Sohler, D, Sorlin, O, Dombrádi, ZS, Achouri, NL, Angélique, JC, Azaiez, F, Baiborodin, D, Borcea, R, Bourgeois, C, Buta, A, Bürger, A, Chapman, R, Dalouzy, JC, Dlouhy, Z, Drouard, A, Elekes, Z, Franchoo, S, Iacob, S, Laurent, B, Lazar, M, Liang, X, Liénard, E, Mrazek, J, Nalpas, L, Negoita, F, Orr, NA, Penionzhkevich, Y, Podolyák, Z, Pougheon, F, Roussel-Chomaz, P, Saint-Laurent, MG, Stanoiu, M, Stefan, I, Nowacki, F & Poves, A 2007, 'Collapse of the N=28 shell closure in S42i', Physical Review Letters, vol. 99, no. 2, 022503. https://doi.org/10.1103/PhysRevLett.99.022503
Bastin, B. ; Grévy, S. ; Sohler, D. ; Sorlin, O. ; Dombrádi, Zs. S. ; Achouri, N. L. ; Angélique, J. C. ; Azaiez, F. ; Baiborodin, D. ; Borcea, R. ; Bourgeois, C. ; Buta, A. ; Bürger, A. ; Chapman, R. ; Dalouzy, J. C. ; Dlouhy, Z. ; Drouard, A. ; Elekes, Z. ; Franchoo, S. ; Iacob, S. ; Laurent, B. ; Lazar, M. ; Liang, X. ; Liénard, E. ; Mrazek, J. ; Nalpas, L. ; Negoita, F. ; Orr, N. A. ; Penionzhkevich, Y. ; Podolyák, Zs ; Pougheon, F. ; Roussel-Chomaz, P. ; Saint-Laurent, M. G. ; Stanoiu, M. ; Stefan, I. ; Nowacki, F. ; Poves, A. / Collapse of the N=28 shell closure in S42i. In: Physical Review Letters. 2007 ; Vol. 99, No. 2.
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AU - Grévy, S.

AU - Sohler, D.

AU - Sorlin, O.

AU - Dombrádi, Zs. S.

AU - Achouri, N. L.

AU - Angélique, J. C.

AU - Azaiez, F.

AU - Baiborodin, D.

AU - Borcea, R.

AU - Bourgeois, C.

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AU - Bürger, A.

AU - Chapman, R.

AU - Dalouzy, J. C.

AU - Dlouhy, Z.

AU - Drouard, A.

AU - Elekes, Z.

AU - Franchoo, S.

AU - Iacob, S.

AU - Laurent, B.

AU - Lazar, M.

AU - Liang, X.

AU - Liénard, E.

AU - Mrazek, J.

AU - Nalpas, L.

AU - Negoita, F.

AU - Orr, N. A.

AU - Penionzhkevich, Y.

AU - Podolyák, Zs

AU - Pougheon, F.

AU - Roussel-Chomaz, P.

AU - Saint-Laurent, M. G.

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AU - Nowacki, F.

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