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; B.S. Nara Singh; F. Nowacki; G. Simpson

doi:10.1103/PhysRevLett.102.092501

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. MorelB.S. Nara Singh, F. Nowacki, G. Simpson

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

67 Citations (Scopus)

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 language	English
Article number	092501
Number of pages	4
Journal	Physical Review Letters
Volume	102
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.102.092501
Publication status	Published - 2 Mar 2009
Externally published	Yes

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Gaudefroy, L., Daugas, J. M., Hass, M., Grevy, S., Stodel, C., 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., ... Simpson, G. (2009). Shell erosion and shape coexistence in S-43(16)27. Physical Review Letters, 102(9), Article 092501. https://doi.org/10.1103/PhysRevLett.102.092501

@article{a43cbbeec18d4e4c9adbc750ed5a6bd6,

title = "Shell erosion and shape coexistence in S-43(16)27",

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",

year = "2009",

month = mar,

day = "2",

doi = "10.1103/PhysRevLett.102.092501",

language = "English",

volume = "102",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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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

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

SN - 0031-9007

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 092501

ER -

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

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