12C+12C scattering as the reference system for reaction cross section

Abstract

Background:: In our previous paper, we tested the chiral (Kyushu) folding model for 12C+12C scattering, since the profile function in the Glauber mode is constructed for the system. We found that the folding model is reliable for reaction cross sections σR in 30≲Elab≲100MeV and 250≲Elab≲400MeV. Accurate data are available for 12C scattering on 9Be, 12C, 27Al targets in 30≲Elab≲400MeV. Purpose:: We determine matter radius rm(exp) of 12C from the accurate σR(exp), using the Kyushu g-matrix folding model. Results:: Our result is rm12(exp)=2.352±0.013 fm for 12C. The model is applied for the accurate data on 12C+27 Al scattering, and yields rm(exp)=2.936±0.012 fm for 27Al. Conclusion:: Our conclusion is that rm(exp)=2.352±0.013 fm agrees with rm(exp)=2.35±0.02 fm determined from interaction cross sections by Tanihata et al.

Keywords

• Reaction cross section
• Interaction cross section
• Matter radii