GEANT4 based simulation study of converter and direct target design and optimization of target for ⁹⁹Mo production using 30 MeV electron linear accelerator

A 30 MeV, 5–10 kW beam power electron linac is under development at SAMEER for radio-isotope production. An enriched 100Mo target will be irradiated to produce 99Mo which will be eluted to give 99mTc. Two approaches of 100Mo target irradiation -converter and direct are studied using GEANT4 simulations. The main aim of this study is to optimize the 100Mo target geometry for maximum yield. It is observed that direct target irradiation gives better activity as compared to converter target approach.