Issue |
EPJ Web of Conf.
Volume 290, 2023
European Nuclear Physics Conference (EuNPC 2022)
|
|
---|---|---|
Article Number | 09008 | |
Number of page(s) | 4 | |
Section | P9 Few-Body Systems | |
DOI | https://doi.org/10.1051/epjconf/202329009008 | |
Published online | 08 December 2023 |
https://doi.org/10.1051/epjconf/202329009008
Low-lying structure of 15C: Information on the N=8 shell gap
1 IGFAE and Dpt. de Física de Partículas, Univ. of Santiago de Compostela, E-15758, Santiago de Compostela, Spain.
2 Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
3 Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
4 Department of Physics, University of Surrey, Guildford GU2 5XH, UK
5 IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
6 KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
7 CNS, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
8 GANIL, CEA/DRF-CNRS/IN2P3, Bd. Henri Becquerel, BP 55027, F-14076 Caen, France
9 Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo, Japan
10 NAT Research Center, NAT Corporation, 3129-45 Hirahara, Muramatsu, Tokai, Naka, 319-1112, Ibaraki, Japan
11 Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
12 School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
13 INFN, Laboratori Nazionali del Sud, Via S. Sofia 44, Catania, Italy
14 Department of Physics, University of Regina, Regina, SK S4S 0A2, Canada
15 IFIN-HH, P. O. Box MG-6, 76900 Bucharest-Magurele, Romania
* e-mail: juan.lois.fuentes@usc.es
Published online: 8 December 2023
The low-lying structure of 15C has been investigated via the neutron-removal d(16C, t) reaction. The experiment was performed at GANIL using a secondary 16C beam produced by fragmentation in the LISE spectrometer at 17.2 MeV/nucleon with an intensity of 5 × 104 pps and 100% purity. The angle and energy of the light ejectile were detected by three MUST2 telescopes. The missing mass technique was used to reconstruct the excitation energy of 15C. In this spectrum, two bound states were observed (gs and the first excited state) and two unbound resonant states above the neutron separation threshold (S n = 1.218 MeV). From the differential cross sections, information on the angular momentum of the transferred nucleon and spectroscopic factors were deduced.
The excitation energies and the deduced spectroscopic factors of the negative parity states placed above the neutron separation energy are an important measurement of the 2p-1h configurations in 15C. Our results show good agreement with shell-model calculations with the YSOX interaction and show a sensitivity to the N=8 shell gap.
© The Authors, published by EDP Sciences, 2023
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