Optimization of (124)I production via (124)Te(p,n)(124)I reaction.

摘要

(124)I was produced, via (124)Te(p,n)(124)I reaction, in greater than 3.7GBq (100mCi, EOB) amount by bombarding (124)TeO(2) targets at 24muA current for about 8h. This was achieved by keeping the target at 37 degrees relative to the beam during irradiation, by sweeping the beam across the target and by keeping the incident energy of the proton at 14.1MeV. The time-averaged yield of our 8h run was 21.1MBq/muAh (0.57mCi/muAh), which was 90% of the theoretical yield calculated using thick target yield data obtained from the reported excitation function for the reaction. At the end of bombardment, the level of (125)I and (126)I impurities, co-produced with (124)I, were 0.03% and 0.007%, respectively.