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Excitation functions for  201 Pb,  202m Pb,  203 Pb and  204m Pb radionuclides which are formed  via  proton induced reactions with natural thallium target have been measured from their respective threshold ( E  thr ) to 27.5 MeV using activation technique. Natural copper foils were used to monitor the cyclotron beam. The integral yields (MBq/μA h) of the produced radionuclides were calculated from the measured excitation functions. The optimum proton energy range for the production of  203 Pb with low amount of impurities is (16–10 MeV) after 5 h of EOB. The experimental cross-sections for  nat Tl( p , xn ) reactions were compared with the cross-sections recommended by the IAEA and with earlier published data when it was possible.

radiochimica acta

Yield and excitation function measurements of some nuclear reactions on natural thallium induced by protons leading to the production of medical radioisotopes  201 Tl and  203 Pb