Measurement of cross-sections radioisotopes produced by the (p,xn) reactions in natMo

We measured cross-sections of the proton-induced reactions on natural molybdenum as a function of the proton energy in the range from threshold energy to 40 MeV by using a conventional stacked-foil activation technique at the MC50 cyclotron of the Korea Institute of Radiological and Medical Sciences (KIRAMS). The present results for most of the radioisotopes showed in general good agreement with the earlier reported data as well as the theoretical data taken from the calculations based on the ALICE-IPPE code. The integral yields for thick targets were also deduced from the measured cross- sections of the produced radioisotopes. The optimum production of the ^99mTc radionuclide with minimum impurities can be obtained at the energy ranges from 10 to 23 MeV, where the production yields were obtained as 597.15 MBq/muA-h at saturation. The measured cross-sections are used for production of medically important radioisotopes such as ^99mTc, ^94mTc, and ^93m,gTc using the medium-energy cyclotrons.