Shell erosion and shape coexistence in S-43(16)27

L. Gaudefroy, J.M. Daugas, M. Hass, S. Grevy, Ch. Stodel, J.C. Thomas, L. Perrot, M. Girod, B. Rosse, J.C. Angelique, D.L. Balabanski, E. Fiori, C. Force, G. Georgiev, D. Kameda, V. Kumar, R.L. Lozeva, I. Matea, V. Meot, P. Morel & 3 others B.S. Nara Singh, F. Nowacki, G. Simpson

Research output: Contribution to journalArticle

Abstract

We report on the g-factor measurement of the first isomeric state in 4316S27 [Ex=320.5(5)keV, T1/2=415(5) ns, and g=0.317(4)]. The 7/2− spin-parity of the isomer and the intruder nature of the ground state of the nucleus are experimentally established for the first time, providing direct and unambiguous evidence of the collapse of the N=28 shell closure in neutron-rich nuclei. The shell model, beyond the mean-field and semiempirical calculations, provides a very consistent description of this nucleus showing that a well deformed prolate and quasispherical states coexist at low energy.
Original languageEnglish
Article number092501
Number of pages4
JournalPhysical Review Letters
Volume102
Issue number9
DOIs
Publication statusPublished - 2 Mar 2009
Externally publishedYes

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erosion
nuclei
closures
parity
isomers
neutrons
ground state
energy

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Gaudefroy, L., Daugas, J. M., Hass, M., Grevy, S., Stodel, C., Thomas, J. C., ... Simpson, G. (2009). Shell erosion and shape coexistence in S-43(16)27. Physical Review Letters, 102(9), [092501]. https://doi.org/10.1103/PhysRevLett.102.092501
Gaudefroy, L. ; Daugas, J.M. ; Hass, M. ; Grevy, S. ; Stodel, Ch. ; Thomas, J.C. ; Perrot, L. ; Girod, M. ; Rosse, B. ; Angelique, J.C. ; Balabanski, D.L. ; Fiori, E. ; Force, C. ; Georgiev, G. ; Kameda, D. ; Kumar, V. ; Lozeva, R.L. ; Matea, I. ; Meot, V. ; Morel, P. ; Nara Singh, B.S. ; Nowacki, F. ; Simpson, G. / Shell erosion and shape coexistence in S-43(16)27. In: Physical Review Letters. 2009 ; Vol. 102, No. 9.
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abstract = "We report on the g-factor measurement of the first isomeric state in 4316S27 [Ex=320.5(5)keV, T1/2=415(5) ns, and g=0.317(4)]. The 7/2− spin-parity of the isomer and the intruder nature of the ground state of the nucleus are experimentally established for the first time, providing direct and unambiguous evidence of the collapse of the N=28 shell closure in neutron-rich nuclei. The shell model, beyond the mean-field and semiempirical calculations, provides a very consistent description of this nucleus showing that a well deformed prolate and quasispherical states coexist at low energy.",
author = "L. Gaudefroy and J.M. Daugas and M. Hass and S. Grevy and Ch. Stodel and J.C. Thomas and L. Perrot and M. Girod and B. Rosse and J.C. Angelique and D.L. Balabanski and E. Fiori and C. Force and G. Georgiev and D. Kameda and V. Kumar and R.L. Lozeva and I. Matea and V. Meot and P. Morel and {Nara Singh}, B.S. and F. Nowacki and G. Simpson",
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Gaudefroy, L, Daugas, JM, Hass, M, Grevy, S, Stodel, C, Thomas, JC, Perrot, L, Girod, M, Rosse, B, Angelique, JC, Balabanski, DL, Fiori, E, Force, C, Georgiev, G, Kameda, D, Kumar, V, Lozeva, RL, Matea, I, Meot, V, Morel, P, Nara Singh, BS, Nowacki, F & Simpson, G 2009, 'Shell erosion and shape coexistence in S-43(16)27' Physical Review Letters, vol. 102, no. 9, 092501. https://doi.org/10.1103/PhysRevLett.102.092501

Shell erosion and shape coexistence in S-43(16)27. / Gaudefroy, L.; Daugas, J.M.; Hass, M.; Grevy, S.; Stodel, Ch.; Thomas, J.C.; Perrot, L.; Girod, M.; Rosse, B.; Angelique, J.C.; Balabanski, D.L.; Fiori, E.; Force, C.; Georgiev, G.; Kameda, D.; Kumar, V.; Lozeva, R.L.; Matea, I.; Meot, V.; Morel, P.; Nara Singh, B.S.; Nowacki, F.; Simpson, G.

In: Physical Review Letters, Vol. 102, No. 9, 092501, 02.03.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Shell erosion and shape coexistence in S-43(16)27

AU - Gaudefroy, L.

AU - Daugas, J.M.

AU - Hass, M.

AU - Grevy, S.

AU - Stodel, Ch.

AU - Thomas, J.C.

AU - Perrot, L.

AU - Girod, M.

AU - Rosse, B.

AU - Angelique, J.C.

AU - Balabanski, D.L.

AU - Fiori, E.

AU - Force, C.

AU - Georgiev, G.

AU - Kameda, D.

AU - Kumar, V.

AU - Lozeva, R.L.

AU - Matea, I.

AU - Meot, V.

AU - Morel, P.

AU - Nara Singh, B.S.

AU - Nowacki, F.

AU - Simpson, G.

PY - 2009/3/2

Y1 - 2009/3/2

N2 - We report on the g-factor measurement of the first isomeric state in 4316S27 [Ex=320.5(5)keV, T1/2=415(5) ns, and g=0.317(4)]. The 7/2− spin-parity of the isomer and the intruder nature of the ground state of the nucleus are experimentally established for the first time, providing direct and unambiguous evidence of the collapse of the N=28 shell closure in neutron-rich nuclei. The shell model, beyond the mean-field and semiempirical calculations, provides a very consistent description of this nucleus showing that a well deformed prolate and quasispherical states coexist at low energy.

AB - We report on the g-factor measurement of the first isomeric state in 4316S27 [Ex=320.5(5)keV, T1/2=415(5) ns, and g=0.317(4)]. The 7/2− spin-parity of the isomer and the intruder nature of the ground state of the nucleus are experimentally established for the first time, providing direct and unambiguous evidence of the collapse of the N=28 shell closure in neutron-rich nuclei. The shell model, beyond the mean-field and semiempirical calculations, provides a very consistent description of this nucleus showing that a well deformed prolate and quasispherical states coexist at low energy.

U2 - 10.1103/PhysRevLett.102.092501

DO - 10.1103/PhysRevLett.102.092501

M3 - Article

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 9

M1 - 092501

ER -

Gaudefroy L, Daugas JM, Hass M, Grevy S, Stodel C, Thomas JC et al. Shell erosion and shape coexistence in S-43(16)27. Physical Review Letters. 2009 Mar 2;102(9). 092501. https://doi.org/10.1103/PhysRevLett.102.092501