The development of a setup for a fast online characterization of radionuclide generators is reported. A generator utilizing the mother nuclide 227 Ac sorbed on a cation exchange resin is continuously eluted by using a peristaltic pump. To allow continuous and pulse-free elution of a large volume over extended time periods a 3D-printed interface designed to remove pressure-oscillations induced by the pump was placed between pump and generator column to ensure undisturbed generator elution. The eluate of the generator is passed through a 3D printed flow cell placed inside a borehole Na(Tl)-scintillation detector for high counting efficiency. Alternatively, a HPGe detector suitable for nuclide identification was used to demonstrate the validity of the online method. The detection system combines conventional gamma-ray spectrometry with fast list mode data acquisition in the Matlab software package. Elution experiments were performed at different flow rates of hydrochloric acid, separating 211 Bi ( t 1/2 = 2.14 min) free from its parent nuclides. In addition, to prove the versatility of the setup, experiments at different hydrochloric acid concentrations were performed resulting in the elution of pure 211 Pb ( t 1/2 = 36.1 min) and 223 Ra ( t 1/2 = 11.43 d), respectively.

中文翻译：

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基于227Ac的发生器演示了放射性核素发生器的快速表征装置的开发

据报道，开发了一种用于快速在线表征放射性核素发生器的装置。利用蠕动泵连续洗脱利用吸附在阳离子交换树脂上的母核素227 Ac的发生器。为了在较长的时间内连续，无脉冲地洗脱大量样品，在泵和发生器色谱柱之间放置了3D打印的界面，该界面旨在消除由泵引起的压力波动，以确保发生器洗脱不受干扰。发生器的洗脱液通过3D打印的流通池，该流通池放置在钻孔Na（T1）闪烁检测器内部，以实现高计数效率。或者，使用适用于核素鉴定的HPGe检测器来证明在线方法的有效性。该检测系统在Matlab软件包中将常规的伽马射线光谱法与快速列表模式数据采集结合在一起。洗脱实验是在盐酸的不同流速下进行的，将211 Bi（t 1/2 = 2.14 min）从其母体核素中分离出来。另外，为了证明该装置的多功能性，在不同的盐酸浓度下进行了实验，分别洗脱出纯净的211 Pb（t 1/2 = 36.1 min）和223 Ra（t 1/2 = 11.43 d）。 。