Regular Article - Theoretical Physics
Matter radius determination of O via small-angle differential cross sections
Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Sichuan University, 610064, Chengdu, China
2 Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
3 School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, China
4 School of Physical Science and Technology, Southwest University, 400715, Chongqing, China
5 School of Nuclear Science and Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
Accepted: 22 December 2022
Published online: 12 January 2023
Fundamental properties of doubly-magic nuclei, such as radius and binding energy, play a key role in theoretical calculations. Reported matter radii of O have a large discrepancy, especially for results obtained from interaction cross sections. To address this issue, the published small-angle differential cross sections of proton-nuclei elastic scattering in the energy region of 200–700 MeV were reanalyzed using the Glauber model. A precise matter radius of 2.554(20) fm for O was extracted. The calculated neutron skin thicknesses of O by different interactions do not obviously depend on the symmetry energy, and agree with our result.
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