Summary

A research group led by Akane Sakaue, teaching assistant and Kentaro Yako, Associate Professor at the Center for Nuclear Study, Graduate School of Science, The University of Tokyo, Tomohiro Uesaka, Director of the Nuclear Dynamics Research Group, RIKEN Nishina Center for Accelerator-Based Science, Shinsuke Ota, Associate Professor at the Research Center for Nuclear Physics, Osaka University, Juzo Zenihiro, Associate Professor at the Graduate School of Science, Kyoto University, and Noritaka Shimizu, Associate Professor at the Center for Computational Sciences at the University of Tsukuba has observed a candidate of new excitation mode of nuclei called the double-Gamow-Teller giant resonance.

In this study, a heavy ion beam of ¹²C at the RIKEN RI Beam Factory was irradiated to a ⁴⁸Ca target, and the newly developed double charge exchange (¹²C, ¹²Be(0⁺₂ )) reaction was measured in order to identify transitions in which the Gamow-Teller transition of converting a neutron into a proton occurs twice in ⁴⁸Ca.

The results of this study may provide clues to the nuclear response involved in neutrino-less double beta decay. 

See more details –> https://www.s.u-tokyo.ac.jp/en/press/10581

Journal

Journal name	Progress of Theoretical and Experimental Physics
Title of paper	Candidate for the double Gamow-Teller giant resonance in 48Ca studied by the (12C, 12Be(0+2)) reaction at 250 MeV/nucleon