Isospin symmetry in B(E2) values : Coulomb excitation study of 21Mg

Ruotsalainen, P.; Henderson, J.; Hackman, G.; Sargsyan, G. H.; Launey, K. D.; Saxena, A.; Srivastava, P. C.; Stroberg, S. R.; Grahn, Tuomas; Pakarinen, Janne; Ball, G. C.; Julin, Rauno; Greenlees, Paul; Smallcombe, J.; Andreoiu, C.; Bernier, N.; Bowry, M.; Buckner, M.; Caballero-Folch, R.; Chester, A.; Cruz, S.; Evitts, L. J.; Frederick, R.; Garnsworthy, A. B.; Holl, M.; Kurkjian, A.; Kisliuk, D.; Leach, K. G.; McGee, E.; Measures, J.; Mücher, D.; Park, J.; Sarazin, F.; Smith, J. K.; Southall, D.; Starosta, K.; Svensson, C. E.; Whitmore, K.; Williams, M.; Wu, C. Y.

doi:10.1103/physrevc.99.051301

Publisher's PDF

Katso/Avaa

653.9 Kb

Lataukset:

Show download details Hide download details

Ruotsalainen, P., Henderson, J., Hackman, G., Sargsyan, G. H., Launey, K. D., Saxena, A., Srivastava, P. C., Stroberg, S. R., Grahn, T., Pakarinen, J., Ball, G. C., Julin, R., Greenlees, P., Smallcombe, J., Andreoiu, C., Bernier, N., Bowry, M., Buckner, M., Caballero-Folch, R., . . . Wu, C. Y. (2019). Isospin symmetry in B(E2) values : Coulomb excitation study of 21Mg. Physical Review C, 99(5), Article 051301(R). https://doi.org/10.1103/physrevc.99.051301

Julkaistu sarjassa

Physical Review C

Tekijät

Ruotsalainen, P. |

Henderson, J. |

Hackman, G. |

Sargsyan, G. H. |

Launey, K. D. |

Saxena, A. |

Srivastava, P. C. |

Stroberg, S. R. |

Grahn, Tuomas |

Pakarinen, Janne |

Ball, G. C. |

Julin, Rauno |

Greenlees, Paul |

Smallcombe, J. |

Andreoiu, C. |

Bernier, N. |

Bowry, M. |

Buckner, M. |

Caballero-Folch, R. |

Chester, A. |

Cruz, S. |

Evitts, L. J. |

Frederick, R. |

Garnsworthy, A. B. |

Holl, M. |

Kurkjian, A. |

Kisliuk, D. |

Leach, K. G. |

McGee, E. |

Measures, J. |

Mücher, D. |

Park, J. |

Sarazin, F. |

Smith, J. K. |

Southall, D. |

Starosta, K. |

Svensson, C. E. |

Whitmore, K. |

Williams, M. |

Wu, C. Y.

Päivämäärä

2019

Oppiaine

Kiihdytinlaboratorio Accelerator Laboratory

Tekijänoikeudet

The Tz=−32 nucleus 21Mg has been studied by Coulomb excitation on 196Pt and 110Pd targets. A 205.6(1)-keV γ-ray transition resulting from the Coulomb excitation of the 52+ ground state to the first excited 12+ state in 21Mg was observed for the first time. Coulomb excitation cross-section measurements with both targets and a measurement of the half-life of the 12+ state yield an adopted value of B(E2;52+→12+)=13.3(4) W.u. A new excited state at 1672(1) keV with tentative 92+assignment was also identified in 21Mg. This work demonstrates a large difference in the B(E2;52+→12+) value between T=32, A=21 mirror nuclei. The difference is investigated in the shell-model framework employing both isospin conserving and breaking USD interactions and using modern ab initio nuclear structure calculations, which have recently become applicable in the sd shell.

Julkaisija

American Physical Society

ISSN Hae Julkaisufoorumista

2469-9985

Lisenssi

Ellei muuten mainita, aineiston lisenssi on In Copyright

Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.

Isospin-symmetry breaking in masses of N ≃ Z nuclei

Ba̧czyk, P.; Dobaczewski, Jacek; Konieczka, M.; Satuła, W.; Nakatsukasa, T.; Sato, K. (Elsevier B.V., 2018)

Effects of the isospin-symmetry breaking (ISB) beyond mean-field Coulomb terms are systematically studied in nuclear masses near the N = Z line. The Coulomb exchange contributions are calculated exactly. We use extended ...
Transition probabilities in 31P and 31S : A test for isospin symmetry

Tonev, D.; de Angelis, G.; Deloncle, I.; Goutev, N.; De Gregorio, G.; Pavlov, P.; Pantaleev, I.L.; Iliev, S.; Yavahchova, M.S.; Bizzeti, P.G.; Demerdjiev, A.; Dimitrov, D.T.; Farnea, E.; Gadea, A.; Geleva, E.; He, C.Y.; Laftchiev, H.; Lenzi, S.M.; Lunardi, S.; Marginean, N.; Menegazzo, R.; Napoli, D.R.; Nowacki, F.; Orlandi, R.; Penttilä, H.; Recchia, F.; Sahin, E.; Singh, R.P.; Stoyanova, M.; Ur, C.A.; Wirth, H.-F. (Elsevier, 2021)

Excited states in the mirror nuclei 31P and 31S were populated in the 1p and 1n exit channels of the reaction 20Ne + 12C, at a beam energy of 33 MeV. The 20Ne beam was delivered for the first time by the Piave-Alpi accelerator ...
Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive 222Ra and 228Ra Beams

Butler, P. A.; Gaffney, L. P.; Spagnoletti, P.; Abrahams, K.; Bowry, M.; Cederkäll, J.; de Angelis, G.; De Witte, H.; Garrett, P. E.; Goldkuhle, A.; Henrich, C.; Illana, A.; Johnston, K.; Joss, D. T.; Keatings, J. M.; Kelly, N. A.; Komorowska, M.; Konki, J.; Kröll, T.; Lozano, M.; Nara Singh, B. S.; O'Donnell, D.; Ojala, J.; Page, R. D.; Pedersen, L. G.; Raison, C.; Reiter, P.; Rodriguez, J. A.; Rosiak, D.; Rothe, S.; Scheck, M.; Seidlitz, M.; Shneidman, T. M.; Siebeck, B.; Sinclair, J.; Smith, J. F.; Stryjczyk, M.; Van Duppen, P.; Vinals, S.; Virtanen, V.; Warr, N.; Wrzosek-Lipska, K.; Zielinska, M. (American Physical Society, 2020)

There is sparse direct experimental evidence that atomic nuclei can exhibit stable “pear” shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, ...
β and γ bands in N = 88, 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory : Vibrations, shape coexistence, and superdeformation

Majola, S. N. T.; Shi, Z.; Song, B. Y.; Li, Z. P.; Zhang, S. Q.; Bark, R. A.; Sharpey-Schafer, J. F.; Aschman, D. G.; Bvumbi, S. P.; Bucher, T. D.; Cullen, D. M.; Dinoko, T. S.; Easton, J. E.; Erasmus, N.; Greenlees, P. T.; Hartley, D. J.; Hirvonen, J.; Korichi, A.; Jakobsson, U.; Jones, P.; Jongile, S.; Julin, R.; Juutinen, S.; Ketelhut, S.; Kheswa, B. V.; Khumalo, N. A.; Lawrie, E. A.; Lawrie, J. J.; Lindsay, R.; Madiba, T. E.; Makhathini, L.; Maliage, S. M.; Maqabuka, B.; Malatji, K. L.; Masiteng, P. L.; Mashita, P. I.; Mdletshe, L.; Minkova, A.; Msebi, L.; Mullins, S. M.; Ndayishimye, J.; Negi, D.; Netshiya, A.; Newman, R.; Ntshangase, S. S.; Ntshodu, R.; Nyakó, B. M.; Papka, P.; Peura, P.; Rahkila, P.; Riedinger, L. L.; Riley, M. A.; Roux, D. G.; Ruotsalainen, P.; Saren, J. J.; Scholey, C.; Shirinda, O.; Sithole, M. A.; Sorri, J.; Stankiewicz, M.; Stolze, S.; Timár, J.; Uusitalo, J.; Vymers, P. A.; Wiedeking, M.; Zimba, G. L. (American Physical Society, 2019)

A comprehensive systematic study is made for the collective β and γ bands in even-even isotopes with neutron numbers N=88 to 92 and proton numbers Z=62(Sm) to 70 (Yb). Data, including excitation energies, B(E0) and B(E2) ...
Isospin-invariant Skyrme energy-density-functional approach with axial symmetry

Sheikh, J. A.; Hinohara, N.; Dobaczewski, Jacek; Nakatsukasa, T.; Nazarewicz, W.; Sato, K. (American Physical Society, 2014)

Abstract. Background: Density functional theory (DFT) is the microscopic tool of choice to describe properties of nuclei over the entire nuclear landscape, with a focus on medium-mass and heavy complex systems. Modern ...