Halo structure of ¹⁷C

Journal Article · 21 November 2018 · European Physical Journal. A

DOI: https://doi.org/10.1140/epja/i2018-12630-3 · OSTI ID:1651379

Braun, Jonas ^[1]; Hammer, Hans-Werner ^[2]; Platter, Lucas J. ^[3]

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1. Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik
2. Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik; GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany). ExtreMe Matter Inst. (EMMI)
3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division

¹⁷C has three states below the ¹⁶C + n threshold with quantum numbers \(J^{P}=3/2^{+}, 1/2^{+}, 5/2^{+}\). These states have relatively small neutron separation energies compared to the neutron separation and excitation energies of ¹⁶C. This separation of scales motivates our investigation of ¹⁷C in a halo effective field theory (Halo EFT) with a ¹⁶C core and a valence neutron as degrees of freedom. In this paper, we discuss various properties of the three states such as electric radii, magnetic moments, electromagnetic transition rates and capture cross sections. In particular, we give predictions for the charge radius and the magnetic moment of the \( 1/2^{+}\) state and for neutron capture on ¹⁶C into this state. Furthermore, we discuss the predictive power of the Halo EFT approach for the \( 3/2^{+}\) and \( 5/2^{+}\) states which are described by a neutron in a D-wave relative to the core.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: German Federal Ministry of Education and Research (BMBF); German Research Foundation (DFG); National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1651379
• Journal Information: European Physical Journal. A, Journal Name: European Physical Journal. A Journal Issue: 11 Vol. 54; ISSN 1434-6001
• Publisher: SpringerCopyright Statement
• Country of Publication: United States
• Language: English