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; D. 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, D. O'Donnell, J. Ollier, T. Otsuka, D. Seweryniak, K. -M. Spohr, D. Steppenbeck, S. L. Tabor, V. Tripathi, Y. Utsuno, P. T. WadyS. Zhu

Physics

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

Abstract

Excited states in Mg-30 have been populated to similar to 6 (h) over bar and 5MeV excitation energy with the C-14(O-18, 2p) reaction. Firm spin assignments for states with J > 2 (h) over bar h 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 f(7/2) and p(3/2) 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
Number of pages	7
Journal	Physical Review C
Volume	82
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.82.034305
Publication status	Published - 7 Sept 2010

Keywords

RICH SODIUM ISOTOPES
BETA-DECAY
NUCLEI
SPECTROSCOPY

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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{bd95eaf75e9e415ebf28bb78ef4a4d96,

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

abstract = "Excited states in Mg-30 have been populated to similar to 6 (h) over bar and 5MeV excitation energy with the C-14(O-18, 2p) reaction. Firm spin assignments for states with J > 2 (h) over bar h 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 f(7/2) and p(3/2) orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.",

keywords = "RICH SODIUM ISOTOPES, BETA-DECAY, NUCLEI, SPECTROSCOPY",

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 D. 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",

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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, D.

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 Mg-30 have been populated to similar to 6 (h) over bar and 5MeV excitation energy with the C-14(O-18, 2p) reaction. Firm spin assignments for states with J > 2 (h) over bar h 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 f(7/2) and p(3/2) 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 Mg-30 have been populated to similar to 6 (h) over bar and 5MeV excitation energy with the C-14(O-18, 2p) reaction. Firm spin assignments for states with J > 2 (h) over bar h 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 f(7/2) and p(3/2) orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.

KW - RICH SODIUM ISOTOPES

KW - BETA-DECAY

KW - NUCLEI

KW - SPECTROSCOPY

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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

Keywords

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