CS-30回旋加速器制备放射性核素<sup>54</sup>Mn

CS-30回旋加速器制备放射性核素⁵⁴Mn

摘要: 放射性同位素⁵⁴Mn是一种半衰期较长的单能γ辐射体，在农业、医学等诸多领域有着广泛的应用。而国内利用加速器制备⁵⁴Mn的工作还未见报道，为填补国内利用加速器制备⁵⁴Mn的研究空白，本工作在四川大学CS-30回旋加速器上开展了无载体⁵⁴Mn制备的相关研究。采用能量为11.5 MeV、束流强度为30 μA的α粒子辐照天然金属钒靶，产生核反应⁵¹V(α, n)⁵⁴Mn。再通过6 mol/L HNO₃溶解，Dowex-50×8阳离子交换树脂柱放化分离得到了活度约为252 μCi的无载体⁵⁴Mn，放射性核纯度为99.9%，产额约为0.8 μCi/μA·h。

Abstract: Radionuclide ⁵⁴Mn, as a gamma emitter with long half-life and single, high intensity gamma emission ray, has a wide application in many fields. However, so far, the preparation of ⁵⁴Mn has not been seen in the domestic reports. To obtain radio-isotope ⁵⁴Mn via an accelerator, the preparation of carrier-free ⁵⁴Mn by CS-30 cyclotron was investigated in this work. A natural Vanadium target was used and irradiated by alpha beam with the energy of 11.5 MeV and the beam current of 30 μA for 10.5 hours. The irradiated V target was dissolved in 6 M HNO₃ and separated by Dowex-50×8 ion exchange resin. As a result, we obtained about 252 μCi carrier-free ⁵⁴Mn with radionuclide purity of 99.9% and the yield was about 0.8 μCi/μA·h.