| Title: |
Shell evolution approaching the N=20 island of inversion: Structure of 26Na |
| Authors: |
Wilson, G.L.; Catford, W.N.; Orr, N.A.; Diget, C.Aa.; Matta, A.; Hackman, G.; Williams, S.J.; Celik, I.C.; Achouri, N.L.; Al Falou, H.; Ashley, R.; Austin, R.A.E.; Ball, G.C.; Blackmon, J.C.; Boston, A.J.; Boston, H.C.; Brown, S.M.; Cross, D.S.; Djongolov, M.; Drake, T.E.; Hager, U.; Fox, S.P.; Fulton, B.R.; Galinski, N.; Garnsworthy, A.B.; Jamieson, D.; Kanungo, R.; Leach, K.; Orce, J.N.; Pearson, C.J.; Porter-Peden, M.; Sarazin, F.; Simpson, E.C.; Sjue, S.; Smalley, D.; Sumithrarachchi, C.; Triambak, S.; Unsworth, C.; Wadsworth, R. |
| Contributors: |
University of Surrey (UNIS); Laboratoire de physique corpusculaire de Caen (LPCC); Université de Caen Normandie (UNICAEN); Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN); Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS); University of York York, UK; TRIUMF Vancouver; St mary's University; St Mary's University; Department of Physics and Astronomy BatonRouge; Louisiana State University BatonRouge (LSU); University of Liverpool; Department of Physics Toronto; University of Toronto; Department of Physics Guelph; University of Guelph Guelf, Ontario, Canada; iThemba LABS National Research Foundation; National Research Foundation South Africa (NRF) |
| Source: |
ISSN: 0370-2693. |
| Publisher Information: |
CCSD; Elsevier |
| Publication Year: |
2016 |
| Collection: |
Normandie Université: HAL |
| Subject Terms: |
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] |
| Description: |
Open Access funded by SCOAP³ - Sponsoring Consortium for Open Access Publishing in Particle PhysicsUnder a Creative Commons license ; International audience ; The levels in 26Na with single particle character have been observed for the first time using the d(25Na, pγ ) reaction at 5 MeV/nucleon. The measured excitation energies and the deduced spectroscopic factors are in good overall agreement with (0+1)ħω shell model calculations performed in a complete spsdfp basis and incorporating a reduction in the N=20 gap. Notably, the 1p3/2 neutron configuration was found to play an enhanced role in the structure of the low-lying negative parity states in 26Na, compared to the isotone 28Al. Thus, the lowering of the 1p3/2 orbital relative to the 0f7/2 occurring in the neighbouring Z=10 and 12 nuclei – 25,27Ne and 27,29Mg – is seen also to occur at Z=11 and further strengthens the constraints on the modelling of the transition into the island of inversion. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/arxiv/1508.01757; ARXIV: 1508.01757; INSPIRE: 1387199 |
| DOI: |
10.1016/j.physletb.2016.05.093 |
| Availability: |
https://in2p3.hal.science/in2p3-01326382; https://in2p3.hal.science/in2p3-01326382v1/document; https://in2p3.hal.science/in2p3-01326382v1/file/1-s2.0-S0370269316302489-main.pdf; https://doi.org/10.1016/j.physletb.2016.05.093 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.AB9DB7AA |
| Database: |
BASE |