Speaker
Description
Reactions at low momentum transfer induced by intermediate-high energy protons are sensitive and pure probes for investigating, e.g. matter density distributions and isovector giant dipole Resonance, which provide important information on nuclear structure and astrophysics. Recently, a novel in-ring reaction experimental method based on stored beam and internal gas-jet target has attracted much interest. This method as one of important supplementary experiments of direct nuclear reactions are characterized by low-momentum sensitivity and low background. As one of the existing facilities, the Cooler Storage Ring at the Heavy Ion Research Facility in Lanzhou (HIRFL-CSR), which is equipped with the electron cooler and internal H2-gas-jet target, also provides an opportunity for performing such kinds of experiments based on inverse kinematics. In this talk, we will present the progress of in-ring reaction investigations at the HIRFL-CSR, including the detector, data analysis and physical experiment. Especially, the recent neutron distribution radius determination of 133Cs and its impact on the interpretation of the coherent elastic neutrino-nucleus scattering measurement (CEvNS-CsI ) will also be introduced.
