Evidence for the extinction of the N=20 neutron-shell closure for 32Mg from direct mass measurements

A. Chaudhuri; C. Andreoiu; T. Brunner; U. Chowdhury; S. Ettenauer; A. T. Gallant; G. Gwinner; A. A. Kwiatkowski; A. Lennarz; D. Lunney; T. D. Macdonald; B. E. Schultz; M. C. Simon; V. V. Simon; J. Dilling

doi:10.1103/PhysRevC.88.054317

Evidence for the extinction of the N=20 neutron-shell closure for 32Mg from direct mass measurements

A. Chaudhuri, C. Andreoiu, T. Brunner, U. Chowdhury, S. Ettenauer, A. T. Gallant, G. Gwinner, A. A. Kwiatkowski, A. Lennarz, D. Lunney, T. D. Macdonald, B. E. Schultz, M. C. Simon, V. V. Simon, J. Dilling

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Abstract

The "island of inversion" around 32Mg is one of the most important paradigms for studying the disappearance of the stabilizing "magicity" of a shell closure. We present the first Penning-trap mass measurements of the exotic nuclides 29^-31Na and 30^-34Mg, which allow precise determination of the empirical shell gap for 32Mg. The new value of 1.10(3) MeV is the smallest observed shell gap for any nuclide with a canonical magic number.

Original language	English
Article number	054317
Journal	Physical Review C - Nuclear Physics
Volume	88
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.88.054317
State	Published - Nov 18 2013
Externally published	Yes

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Chaudhuri, A., Andreoiu, C., Brunner, T., Chowdhury, U., Ettenauer, S., Gallant, A. T., Gwinner, G., Kwiatkowski, A. A., Lennarz, A., Lunney, D., Macdonald, T. D., Schultz, B. E., Simon, M. C., Simon, V. V., & Dilling, J. (2013). Evidence for the extinction of the N=20 neutron-shell closure for 32Mg from direct mass measurements. Physical Review C - Nuclear Physics, 88(5), Article 054317. https://doi.org/10.1103/PhysRevC.88.054317

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author = "A. Chaudhuri and C. Andreoiu and T. Brunner and U. Chowdhury and S. Ettenauer and Gallant, {A. T.} and G. Gwinner and Kwiatkowski, {A. A.} and A. Lennarz and D. Lunney and Macdonald, {T. D.} and Schultz, {B. E.} and Simon, {M. C.} and Simon, {V. V.} and J. Dilling",

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Chaudhuri, A, Andreoiu, C, Brunner, T, Chowdhury, U, Ettenauer, S, Gallant, AT, Gwinner, G, Kwiatkowski, AA, Lennarz, A, Lunney, D, Macdonald, TD, Schultz, BE, Simon, MC, Simon, VV & Dilling, J 2013, 'Evidence for the extinction of the N=20 neutron-shell closure for 32Mg from direct mass measurements', Physical Review C - Nuclear Physics, vol. 88, no. 5, 054317. https://doi.org/10.1103/PhysRevC.88.054317

TY - JOUR

T1 - Evidence for the extinction of the N=20 neutron-shell closure for 32Mg from direct mass measurements

AU - Chaudhuri, A.

AU - Andreoiu, C.

AU - Brunner, T.

AU - Chowdhury, U.

AU - Ettenauer, S.

AU - Gallant, A. T.

AU - Gwinner, G.

AU - Kwiatkowski, A. A.

AU - Lennarz, A.

AU - Lunney, D.

AU - Macdonald, T. D.

AU - Schultz, B. E.

AU - Simon, M. C.

AU - Simon, V. V.

AU - Dilling, J.

PY - 2013/11/18

Y1 - 2013/11/18

N2 - The "island of inversion" around 32Mg is one of the most important paradigms for studying the disappearance of the stabilizing "magicity" of a shell closure. We present the first Penning-trap mass measurements of the exotic nuclides 29-31Na and 30-34Mg, which allow precise determination of the empirical shell gap for 32Mg. The new value of 1.10(3) MeV is the smallest observed shell gap for any nuclide with a canonical magic number.

AB - The "island of inversion" around 32Mg is one of the most important paradigms for studying the disappearance of the stabilizing "magicity" of a shell closure. We present the first Penning-trap mass measurements of the exotic nuclides 29-31Na and 30-34Mg, which allow precise determination of the empirical shell gap for 32Mg. The new value of 1.10(3) MeV is the smallest observed shell gap for any nuclide with a canonical magic number.

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U2 - 10.1103/PhysRevC.88.054317

DO - 10.1103/PhysRevC.88.054317

M3 - Article

AN - SCOPUS:84888335685

SN - 0556-2813

VL - 88

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 054317

ER -

Evidence for the extinction of the N=20 neutron-shell closure for 32Mg from direct mass measurements

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