Spatial measure of reaction size in proton scattering

3rd International Workshop on "State of the Art in Nuclear Cluster Physics"

Tomita, M.^1 ; Iwasaki, M.^1 ; Otani, R.^1 ; Ito, M.^1,2

Department of Pure and Applied Physics, Kansai University, Yamatecho, 3-3-35, Suita, Japan^1

Research Center for Nuclear Phtsics (RCNP), Osaka University, Mihogaoka 10-1, Suita

567-0047, Japan^2

关键词: Coupled-channel calculations;    Intrinsic structures;    Partial waves;    Proton scattering;    Scattering process;    Spatial measures;    Spatial size;    Vibrational excitation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/569/1/012022/pdf
DOI  :  10.1088/1742-6596/569/1/012022

来源: IOP

【 摘 要 】

We introduce a scattering radius, which characterizes a spatial size of the scattering area, from partial wave decompositions of a cross section for a nucleon-nucleus scattering. The coupled-channel calculations of the p +12C scattering are performed in the range of Elab 29.95 MeV to 65 MeV, and the scattering radii for the elastic scattering and the various inelastic channels, which involve the rotational or vibrational excitations and the 3α excitations in12C, are derived from the partial wave decomposition. We found that the scattering radii for the inelastic channels with a well developed 3 a structure are strongly enhanced in comparison to the scattering radius for the elastic and collective channels. This enhancement of the scattering radius for the 3α channel strongly suggests that the scattering radius is sensitive to a size of the intrinsic structure of the finally excited state in the scattering process.