Reaction cross sections of carbon isotopes incident on a proton

摘要

We systematically study total reaction cross sections of carbon isotopes withN=6-16 on a proton target for wide range of incident energies, putting anemphasis on the difference from the case of a carbon target. The analysisincludes the reaction cross sections of ^{19,20,22}C at 40 AMeV, the data ofwhich have recently been measured at RIKEN. The Glauber theory is used tocalculate the reaction cross sections. To describe the intrinsic structure ofthe carbon isotopes, we use a Slater determinant generated from aphenomenological mean-field potential, and construct the density distributions.To go beyond the simple mean-field model, we adopt two types of dynamicalmodels: One is a core+n model for odd-neutron nuclei, and the other is acore+n+n model for 16C and 22C. We propose empirical formulas which are usefulin predicting unknown cross sections.