回旋加速器利用天然钙产生了⁴⁴gSc。
Cyclotron produced ⁴⁴gSc from natural calcium.
作者信息
Severin G W, Engle J W, Valdovinos H F, Barnhart T E, Nickles R J
机构信息
Medical Physics Department, University of Wisconsin-Madison, Madison, WI 53706, United States.
出版信息
Appl Radiat Isot. 2012 Aug;70(8):1526-30. doi: 10.1016/j.apradiso.2012.04.030. Epub 2012 May 24.
Abstract
(44g)Sc was produced by 16MeV proton irradiation of unenriched calcium metal with radionuclidic purity greater than 95%. The thick target yield at saturation for (44g)Sc was 213 MBq/μA, dwarfing the yields of contaminants (43)Sc,(44 m)Sc, (47)Sc and (48)Sc for practical bombardment times of 1-2h. Scandium was isolated from the dissolved calcium target by filtration, and reconstituted in small volumes of dilute HCl. Reactions with the chelate 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) indicated a reactivity of 54 ± 14 Gbq/μmol at end-of-bombardment.
摘要
（44g）钪是通过用能量为16MeV的质子辐照天然钙金属产生的，其放射性核素纯度大于95%。在饱和状态下，（44g）钪的厚靶产率为213MBq/μA，在实际轰击时间1 - 2小时的情况下，这使得污染物（43）钪、（44m）钪、（47）钪和（48）钪的产率相形见绌。通过过滤从溶解的钙靶中分离出钪，并在少量稀盐酸中重新配制。与螯合剂1,4,7,10 - 四氮杂环十二烷 - 1,4,7,10 - 四乙酸（DOTA）的反应表明，轰击结束时的反应活性为54±14 Gbq/μmol。
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