Nuclear Structure 2026

Coulomb Breakup and soft E1 excitation of Halo Nuclei

Jul 28, 2026, 11:00 a.m.

30m

Fletcher Challenge Canada (Simon Fraser University Harbour Centre)

Invited speakers Tuesday Morning Late Session Block

Speaker

Prof. Takashi Nakamura (Institute of Science Tokyo)

Description

Soft E1 excitation, characterized by enhanced electric dipole strength at low excitation energies, is a distinctive feature of neutron halo nuclei, and has been extensively studied via Coulomb breakup reactions [1,2]. It serves as a powerful spectroscopic probe for both one-neutron and two-neutron halo nuclei. In this talk, we present recent Coulomb breakup studies of the one-neutron halo nucleus 31Ne, and the two-neutron halo nuclei, 19B [3], and 22C, performed with the SAMURAI spectrometer at RIBF, RIKEN. We discuss new insights into the soft E1 excitation, particularly in two-neutron halo nuclei. We also discuss future perspectives for Coulomb breakup studies of halo nuclei.

[1] T. Nakamura, Coulomb breakup and soft E1 excitation of neutron halo nuclei, in Handbook of Nuclear Physics, edited by I. Tanihata, H. Toki, and T. Kajino (Springer Nature Singapore, Singapore, 2020) pp. 1-37
[2] T. Aumann and T. Nakamura, The electric dipole response of exotic nuclei, Physica Scripta 2013, T152, 014012 (2013).
[3] K.J. Cook et al., Phys. Rev. Lett. 124, 212503 (2020).