Halo structure of ${}^{17}$C

Abstract

${}^{17}$C has three states below the ${}^{16}$C + $n$ 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 ${}^{16}$C. This separation of scales motivates our investigation of ${}^{17}$C in a Halo effective field theory (Halo EFT) with a ${}^{16}$C core and a valence neutron as degrees of freedom. 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 ${}^{16}$C 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.

arXiv comment19 pages, 9 figures, section on M1 capture revised, published version

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Cited by in corpus (4)

• Nuclear effective field theory: status and perspectives
• Study of ground state properties of carbon isotopes with deformed relativistic Hartree-Bogoliubov theory in continuum
• On the sensitivity of nuclear clocks to new physics
• Electric structure of shallow D-wave states in Halo EFT