Isobaric analog resonances of Mg 31 and the border of the island of inversion

N. Imai, M. Mukai, J. Cederkäll, H. Aghai, P. Golubev, H. T. Johansson, D. Kahl, J. Kurcewics, T. Teranishi, Y. X. Watanabe

研究成果: ジャーナルへの寄稿記事

6 引用 (Scopus)

抄録

The evolution of the nuclear shell structure in the region of the neutron-rich shell-breaking nucleus Mg32 has been the subject of considerable interest. We present here the first determination of the overlap of the ground and two first excited states in Mg31 with a neutron coupled to the ground state in Mg30 based on studies of its isobaric analog resonances in Al31. The excitation function for proton resonant elastic scattering on Mg30 was measured close to 0 in the laboratory frame by bombarding a thick polyethylene target with a Mg30 beam at an energy of 2.92 MeV/nucleon at the REX-ISOLDE facility at CERN. Three resonances were successfully resolved, and angular momenta and total and proton resonance widths were determined by using R-matrix analysis. The deduced spectroscopic factor for the ground state in Mg31 is consistent with the shell-model calculation, whereas those for the first and second excited states could not be reproduced. These results show that a drastic change in structure occurs between Mg30 and Mg31 and that the onset of structural change in this region therefore occurs between these two isotopes.

元の言語英語
記事番号011302
ジャーナルPhysical Review C - Nuclear Physics
90
発行部数1
DOI
出版物ステータス出版済み - 7 15 2014

Fingerprint

borders
analogs
inversions
excitation
proton resonance
neutrons
ground state
polyethylenes
elastic scattering
angular momentum
isotopes
nuclei
protons
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

これを引用

Imai, N., Mukai, M., Cederkäll, J., Aghai, H., Golubev, P., Johansson, H. T., ... Watanabe, Y. X. (2014). Isobaric analog resonances of Mg 31 and the border of the island of inversion. Physical Review C - Nuclear Physics, 90(1), [011302]. https://doi.org/10.1103/PhysRevC.90.011302

Isobaric analog resonances of Mg 31 and the border of the island of inversion. / Imai, N.; Mukai, M.; Cederkäll, J.; Aghai, H.; Golubev, P.; Johansson, H. T.; Kahl, D.; Kurcewics, J.; Teranishi, T.; Watanabe, Y. X.

:: Physical Review C - Nuclear Physics, 巻 90, 番号 1, 011302, 15.07.2014.

研究成果: ジャーナルへの寄稿記事

Imai, N, Mukai, M, Cederkäll, J, Aghai, H, Golubev, P, Johansson, HT, Kahl, D, Kurcewics, J, Teranishi, T & Watanabe, YX 2014, 'Isobaric analog resonances of Mg 31 and the border of the island of inversion', Physical Review C - Nuclear Physics, 巻. 90, 番号 1, 011302. https://doi.org/10.1103/PhysRevC.90.011302
Imai N, Mukai M, Cederkäll J, Aghai H, Golubev P, Johansson HT その他. Isobaric analog resonances of Mg 31 and the border of the island of inversion. Physical Review C - Nuclear Physics. 2014 7 15;90(1). 011302. https://doi.org/10.1103/PhysRevC.90.011302
Imai, N. ; Mukai, M. ; Cederkäll, J. ; Aghai, H. ; Golubev, P. ; Johansson, H. T. ; Kahl, D. ; Kurcewics, J. ; Teranishi, T. ; Watanabe, Y. X. / Isobaric analog resonances of Mg 31 and the border of the island of inversion. :: Physical Review C - Nuclear Physics. 2014 ; 巻 90, 番号 1.
@article{d0e5db0b61fe4870815288a9a8977728,
title = "Isobaric analog resonances of Mg 31 and the border of the island of inversion",
abstract = "The evolution of the nuclear shell structure in the region of the neutron-rich shell-breaking nucleus Mg32 has been the subject of considerable interest. We present here the first determination of the overlap of the ground and two first excited states in Mg31 with a neutron coupled to the ground state in Mg30 based on studies of its isobaric analog resonances in Al31. The excitation function for proton resonant elastic scattering on Mg30 was measured close to 0 in the laboratory frame by bombarding a thick polyethylene target with a Mg30 beam at an energy of 2.92 MeV/nucleon at the REX-ISOLDE facility at CERN. Three resonances were successfully resolved, and angular momenta and total and proton resonance widths were determined by using R-matrix analysis. The deduced spectroscopic factor for the ground state in Mg31 is consistent with the shell-model calculation, whereas those for the first and second excited states could not be reproduced. These results show that a drastic change in structure occurs between Mg30 and Mg31 and that the onset of structural change in this region therefore occurs between these two isotopes.",
author = "N. Imai and M. Mukai and J. Cederk{\"a}ll and H. Aghai and P. Golubev and Johansson, {H. T.} and D. Kahl and J. Kurcewics and T. Teranishi and Watanabe, {Y. X.}",
year = "2014",
month = "7",
day = "15",
doi = "10.1103/PhysRevC.90.011302",
language = "English",
volume = "90",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "1",

}

TY - JOUR

T1 - Isobaric analog resonances of Mg 31 and the border of the island of inversion

AU - Imai, N.

AU - Mukai, M.

AU - Cederkäll, J.

AU - Aghai, H.

AU - Golubev, P.

AU - Johansson, H. T.

AU - Kahl, D.

AU - Kurcewics, J.

AU - Teranishi, T.

AU - Watanabe, Y. X.

PY - 2014/7/15

Y1 - 2014/7/15

N2 - The evolution of the nuclear shell structure in the region of the neutron-rich shell-breaking nucleus Mg32 has been the subject of considerable interest. We present here the first determination of the overlap of the ground and two first excited states in Mg31 with a neutron coupled to the ground state in Mg30 based on studies of its isobaric analog resonances in Al31. The excitation function for proton resonant elastic scattering on Mg30 was measured close to 0 in the laboratory frame by bombarding a thick polyethylene target with a Mg30 beam at an energy of 2.92 MeV/nucleon at the REX-ISOLDE facility at CERN. Three resonances were successfully resolved, and angular momenta and total and proton resonance widths were determined by using R-matrix analysis. The deduced spectroscopic factor for the ground state in Mg31 is consistent with the shell-model calculation, whereas those for the first and second excited states could not be reproduced. These results show that a drastic change in structure occurs between Mg30 and Mg31 and that the onset of structural change in this region therefore occurs between these two isotopes.

AB - The evolution of the nuclear shell structure in the region of the neutron-rich shell-breaking nucleus Mg32 has been the subject of considerable interest. We present here the first determination of the overlap of the ground and two first excited states in Mg31 with a neutron coupled to the ground state in Mg30 based on studies of its isobaric analog resonances in Al31. The excitation function for proton resonant elastic scattering on Mg30 was measured close to 0 in the laboratory frame by bombarding a thick polyethylene target with a Mg30 beam at an energy of 2.92 MeV/nucleon at the REX-ISOLDE facility at CERN. Three resonances were successfully resolved, and angular momenta and total and proton resonance widths were determined by using R-matrix analysis. The deduced spectroscopic factor for the ground state in Mg31 is consistent with the shell-model calculation, whereas those for the first and second excited states could not be reproduced. These results show that a drastic change in structure occurs between Mg30 and Mg31 and that the onset of structural change in this region therefore occurs between these two isotopes.

UR - http://www.scopus.com/inward/record.url?scp=84905178839&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905178839&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.90.011302

DO - 10.1103/PhysRevC.90.011302

M3 - Article

AN - SCOPUS:84905178839

VL - 90

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 1

M1 - 011302

ER -