Cross-shell excitations near the "island of inversion": Structure of Mg-30

A. N. Deacon; J. F. Smith; S. J. Freeman; R. V. F. Janssens; M. P. Carpenter; B. Hadinia; C. R. Hoffman; B. P. Kay; T. Lauritsen; C. J. Lister; David O'Donnell; J. Ollier; T. Otsuka; D. Seweryniak; K. -M. Spohr; D. Steppenbeck; S. L. Tabor; V. Tripathi; Y. Utsuno; P. T. Wady; S. Zhu

doi:10.1103/PhysRevC.82.034305

Cross-shell excitations near the "island of inversion": Structure of Mg-30

A. N. Deacon, J. F. Smith, S. J. Freeman, R. V. F. Janssens, M. P. Carpenter, B. Hadinia, C. R. Hoffman, B. P. Kay, T. Lauritsen, C. J. Lister, David O'Donnell, J. Ollier, T. Otsuka, D. Seweryniak, K. -M. Spohr, D. Steppenbeck, S. L. Tabor, V. Tripathi, Y. Utsuno, P. T. WadyS. Zhu

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24 Citations (Scopus)

Abstract

Excited states in Mg30 have been populated to ~6ℏ and 5 MeV excitation energy with the C14(O18,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.

Original language	English
Article number	034305
Journal	Physical Review C
Volume	82
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.82.034305
Publication status	Published - 7 Sept 2010

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Deacon, A. N., Smith, J. F., Freeman, S. J., Janssens, R. V. F., Carpenter, M. P., Hadinia, B., Hoffman, C. R., Kay, B. P., Lauritsen, T., Lister, C. J., O'Donnell, D., Ollier, J., Otsuka, T., Seweryniak, D., Spohr, K. .-M., Steppenbeck, D., Tabor, S. L., Tripathi, V., Utsuno, Y., ... Zhu, S. (2010). Cross-shell excitations near the "island of inversion": Structure of Mg-30. Physical Review C, 82(3), Article 034305. https://doi.org/10.1103/PhysRevC.82.034305

@article{287bfb98148042d78bdf6799b2d64c59,

title = "Cross-shell excitations near the {"}island of inversion{"}: Structure of Mg-30",

abstract = "Excited states in Mg30 have been populated to ~6ℏ and 5 MeV excitation energy with the C14(O18,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.",

author = "Deacon, {A. N.} and Smith, {J. F.} and Freeman, {S. J.} and Janssens, {R. V. F.} and Carpenter, {M. P.} and B. Hadinia and Hoffman, {C. R.} and Kay, {B. P.} and T. Lauritsen and Lister, {C. J.} and David O'Donnell and J. Ollier and T. Otsuka and D. Seweryniak and Spohr, {K. -M.} and D. Steppenbeck and Tabor, {S. L.} and V. Tripathi and Y. Utsuno and Wady, {P. T.} and S. Zhu",

year = "2010",

month = sep,

day = "7",

doi = "10.1103/PhysRevC.82.034305",

language = "English",

volume = "82",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "3",

}

Deacon, AN, Smith, JF, Freeman, SJ, Janssens, RVF, Carpenter, MP, Hadinia, B, Hoffman, CR, Kay, BP, Lauritsen, T, Lister, CJ, O'Donnell, D, Ollier, J, Otsuka, T, Seweryniak, D, Spohr, K-M, Steppenbeck, D, Tabor, SL, Tripathi, V, Utsuno, Y, Wady, PT & Zhu, S 2010, 'Cross-shell excitations near the "island of inversion": Structure of Mg-30', Physical Review C, vol. 82, no. 3, 034305. https://doi.org/10.1103/PhysRevC.82.034305

TY - JOUR

T1 - Cross-shell excitations near the "island of inversion"

T2 - Structure of Mg-30

AU - Deacon, A. N.

AU - Smith, J. F.

AU - Freeman, S. J.

AU - Janssens, R. V. F.

AU - Carpenter, M. P.

AU - Hadinia, B.

AU - Hoffman, C. R.

AU - Kay, B. P.

AU - Lauritsen, T.

AU - Lister, C. J.

AU - O'Donnell, David

AU - Ollier, J.

AU - Otsuka, T.

AU - Seweryniak, D.

AU - Spohr, K. -M.

AU - Steppenbeck, D.

AU - Tabor, S. L.

AU - Tripathi, V.

AU - Utsuno, Y.

AU - Wady, P. T.

AU - Zhu, S.

PY - 2010/9/7

Y1 - 2010/9/7

N2 - Excited states in Mg30 have been populated to ~6ℏ and 5 MeV excitation energy with the C14(O18,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.

AB - Excited states in Mg30 have been populated to ~6ℏ and 5 MeV excitation energy with the C14(O18,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.

U2 - 10.1103/PhysRevC.82.034305

DO - 10.1103/PhysRevC.82.034305

M3 - Article

SN - 2469-9985

VL - 82

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 034305

ER -

Cross-shell excitations near the "island of inversion": Structure of Mg-30

Abstract

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