Production and utilization of radioactive astatine isotopes in the {sup 7}Li+{sup nat}Pb reaction

Production cross sections of astatine isotopes in 29-57 MeV {sup 7}Li+{sup nat}Pb reaction have been measured by α- and γ-ray spectrometry. Excitation functions of production cross sections have been compared with a statistical model calculation to study the reaction mechanism of the {sup 7}Li+{sup nat}Pb reaction. A chemical separation of astatine from an irradiated lead target has been studied with a dry-distillation method. (author)