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

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

28 Scopus citations

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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10.1103/PhysRevC.88.054317

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

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.",

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",

year = "2013",

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doi = "10.1103/PhysRevC.88.054317",

language = "English",

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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.

UR - https://www.scopus.com/pages/publications/84888335685

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

Abstract

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