Production Cross Sections and Induced Activity in Ge Isotopes by 30 MeV Proton Beam

Abstract

The excitation functions of ⁷⁰Ge(p,n)⁷⁰As,⁷²Ge(p,n)⁷²As, ⁷⁴Ge(p,n)⁷⁴As and ⁷⁶Ge(p,n)⁷⁶As reactions were studied from reaction threshold to 30 MeV by using EMPIRE-3.2 and TALYS-1.9 nuclear reaction model codes. This study is important because some isotopes produced are important for positron emission tomography (PET). Direct, pre-compound and compound nuclear reactions are considered as main nuclear reaction mechanisms in the codes. The calculated excitation functions have been compared with available experimental data and found to be in fair agreement. Furthermore, the contributions of various reaction mechanisms have been studied in total reaction cross-section that varies with the incident proton energy. The estimation of induced radio activity in thick Ge target due to the primary interaction is carried out for1μA, 30 MeV proton beam.