通过质子辐照金属钇生产 88 锆和为 DICER 中中子透射测量制备靶。
Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER.
机构信息
Chemistry Division, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM, 87545, USA.
Radiation Science and Engineering Center, Pennsylvania State University, 135 Breazeale Nuclear Reactor, University Park, PA, 16802, USA.
出版信息
Sci Rep. 2023 Jan 31;13(1):1736. doi: 10.1038/s41598-023-27993-7.
A process for the production of tens to hundreds of GBq amounts of zirconium-88 (Zr) using proton beams on yttrium was developed. For this purpose, yttrium metal targets (≈20 g) were irradiated in a ~16 to 34 MeV proton beam at a beam current of 100-200 µA at the Los Alamos Isotope Production Facility (IPF). The Zr radionuclide was produced and separated from the yttrium targets using hydroxamate resin with an elution yield of 94(5)% (1σ). Liquid DCl solution in DO was selected as a suitable Zr sample matrix due to the high neutron transmission of deuterium compared to hydrogen and an even distribution of Zr in the sample matrix. The separated Zr was dissolved in DCl and 8 µL of the obtained solution was transferred to a tungsten sample can with a 1.2 mm diameter hole using a syringe and automated filling station inside a hot cell. Neutron transmission of the obtained Zr sample was measured at the Device for Indirect Capture Experiments on Radionuclides (DICER).
开发了一种使用质子束在钇上生产数十到数百 GBq 数量的锆-88 (Zr) 的方法。为此，在洛斯阿拉莫斯同位素生产设施 (IPF) 中，使用 100-200µA 的约 16 至 34 MeV 质子束照射约 20g 的钇金属靶。Zr 放射性核素使用羟肟酸树脂从钇靶中产生和分离，洗脱产率为 94(5)% (1σ)。由于与氢相比氘的中子透射率高，并且 Zr 在样品基质中的分布均匀，因此选择液体 DCl 在 DO 中的溶液作为合适的 Zr 样品基质。分离出的 Zr 溶解在 DCl 中，然后使用注射器和热室内部的自动化填充站将 1.2mm 直径孔的钨样品罐中的 8µL 获得的溶液转移到钨样品罐中。在间接俘获放射性核素实验装置 (DICER) 中测量获得的 Zr 样品的中子透射率。
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