title: [Production of 52Fe by the 55Mn(p,4n)52Fe reaction and milking of 52mMn from 52Fe].
abstract: The excitation functions were measured for the nuclear reactions of 55Mn(p,4n)52Fe and 55Mn(p,n)55Fe by using thin manganese disks, specially prepared under a pressure of 200-250 kg/cm2 at 400-500 degrees C for 0.5-1 hour. The maximum cross section in the excitation function for the 55Mn(p,4n)52Fe reaction was found to be 1.4mb at Ep = 54 MeV. From the yield curve, 24.8 MBq/microA h (670 muCi/microA h) of 52Fe was estimated to be produced with 0.45% 55Fe contamination in the energy region between 73 and 39 MeV. Iron-52 was produced in the yield of 85-93% to the expected value from the yield curve in the energy region of 44-60 MeV. For the separation of 52Fe, the radiochemical yield of 52FeCl3 was 70-92% and its radionuclidic purity was higher than 99%. Manganese-52m was obtained repeatedly by eluting the anion exchange column adsorbing 52Fe with 6N-HC1 in 99.9% radionuclidic purity and 86% yield to the expected value. The amount of 55Fe in a large quantity of 52Fe could be determined in 1-2 days from end of bambardment (EOB) by analyzing decay curve of Mn-Ka-X ray from 52Fe and 55Fe.
mesh_terms: D004340:Drug Contamination; D004735:Energy Transfer; D006207:Half-Life; D007504:Iron Radioisotopes / Q000032:analysis / Q000138:chemical synthesis*; D008345:Manganese / Q000138:chemical synthesis*; D011522:Protons; D011851:Radioactivity; D011868:Radioisotopes; D011876:Radionuclide Generators
chemical_list: D007504:Iron Radioisotopes; D011522:Protons; D011868:Radioisotopes; D008345:Manganese