Investigation of Production Reaction Cross Section for $\text{}^{137}Cs$ Used in Radiotherapy

During the production of the radiation source that used in radiotherapy may occur nuclear reactions are very important in terms of human health. $\text{}^{137}Cs$ is used in radiotherapy that consists of fission the $\text{}^{235}U$ core. Because of physical half-live of $\text{}^{137}Cs$ is 30 years, it is advantage for the radioactive half-lives. In this study, radionuclide production reaction cross section for $\text{}^{235}U$ $(n,f)^{137}Cs$ is calculated with TALYS 1.6 nuclear simulation code that based on Monte Carlo