Аннотация
Charge changing cross sections (\(\sigma _{\text{CC}}\)) for ^40–48K and ^42–51Ca have been measured using BigRIPS at RIBF, RIKEN. The \(\sigma _{\text{CC}}\) obtained along the long isotopic chain of K and Ca revealed the fact that \(\sigma _{\text{CC}}\) have strong proton separation energy () dependence. The data are compared with the calculation based on the Glauber model and also with the proton evaporation model. It is found that the \(\sigma _{\text{CC}}\) data are well reproduced when the proton evaporation effect is taken into account.