电沉积法制备加速器生产~(68)Ge用镓镍固体靶

68Ge主要用于制备68Ge-68Ga发生器以及正电子发射型计算机断层显像(positron emission computed tomography)的校正放射源。采用69Ga(p,2n)68Ge反应制备68Ge,本研究建立了制备镓镍合金靶件的方法,以利用现有的回旋加速器生产68Ge。在酸性条件下通过电沉积法制备镓镍固体靶件,优化镀液组分以及电沉积条件,确定了电沉积工艺,制备了镓含量75%的镓镍固体靶件。经过三次辐照实验表明,此靶件可以生产68Ge。此工艺简便易行,制备的靶件质量稳定,可应用于回旋加速器生产68Ge。

Preparation of Ga/Ni Solid Target for Cyclotron-Produced 68Ge by Electrodeposition

Germanium 68 is mainly used for preparation of the 68Ge-68Ga generator and the calibration of positron emission computed tomography. The low melting point of the target material in the production reaction 69Ga （p, 2n） 68Ge has limited the availability of Ge-68. In order to use the existing industrial cyclotron hardware to produce Germanium 68, the method of eleetrodepositing gallium-nickel alloy was set up in this study. Acidic require- ments were met through the preparation of the gallium-nickel alloy targets and by optimi- zing the plating bath composition and electrodepositing conditions, finally confirmed by ad- justment of the electro-deposition process, and preparation of the gallium-nickel alloy tar- gets with a gallium content of 75 %. After three time irradiation tests, the process was cer- tified to produce targets of Germanium 68. This process is user-friendly, the preparation of the targets is of stable quality, and it can be applied to the cyclotron production of Germani- um 68.