Speaker
Takashi Nakamura
(Tokyo Institute of Technology)
Description
Recent experimental results on Coulomb and nuclear breakup for neutron drip-line nuclei at the newly commissioned RIBF at RIKEN are presented. Coulomb breakup reaction is a useful tool to probe halo structure since the cross section is enhanced due to the large E1 transitions at low excitation energies (soft E1 excitation) for halo nuclei. We have measured inclusive Coulomb breakup cross sections for the one-neutron halo candidate 31Ne and two-neutron halo candidate 22C at about 230-240MeV/nucleon. These secondary beams were obtained using an intense 48Ca beam at 345MeV/nucleon at RIBF. In this experiment, we indeed observed the large Coulomb breakup cross sections over 0.5b for both nuclei, which can only be explained by the existence of halo structure in these nuclei. For 31Ne we discuss the structure in terms of properties in the island of inversion as well. In this talk, we also report on the on-going project of SAMURAI/NEBULA, where kinematically complete measurements of breakup reactions for halo/skin nuclei are planned in the near future.
Author
Takashi Nakamura
(Tokyo Institute of Technology)
