Muuri Eveliina, Sorokina Tatiana, Donnard Jérôme, Billon Sophie, Helariutta Kerttuli, Koskinen Lasse, Martin Andrew, Siitari-Kauppi Marja
Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, 00560, Helsinki, Finland.
Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, 00560, Helsinki, Finland.
Appl Radiat Isot. 2019 Jul;149:108-113. doi: 10.1016/j.apradiso.2019.04.026. Epub 2019 Apr 25.
The spatial distribution of barium activity in granitic rocks was measured with two autoradiography techniques; digital autoradiography using phosphor imaging plate technique (Fuji 5100) and filmless electronic autoradiography (i.e. The BeaQuant™), which is based on a gas detector incorporated in a micromesh Parallel Ionization Multiplier (PIM). Rock cubes taken from a diffusion experiment that were in contact with Ba tracer were measured to determine diffusion profiles. In addition, the spatial distribution of Ba in the samples was determined. Polymethyl methacrylate standards for Ba were developed to determine the counting efficiency for electronic autoradiography. Good visual correlation between the two autoradiography methods were obtained in this study. The results of the experiments presented here can be utilized in future studies on the diffusion behavior of barium in granitic rocks.
采用两种放射自显影技术测量花岗岩中钡活度的空间分布；一种是使用磷光成像板技术（富士5100）的数字放射自显影，另一种是基于集成在微网平行电离倍增器（PIM）中的气体探测器的无胶片电子放射自显影（即BeaQuant™）。测量了取自与钡示踪剂接触的扩散实验的岩石立方体，以确定扩散剖面。此外，还测定了样品中钡的空间分布。开发了钡的聚甲基丙烯酸甲酯标准品，以确定电子放射自显影的计数效率。本研究中两种放射自显影方法获得了良好的视觉相关性。本文给出的实验结果可用于未来关于钡在花岗岩中扩散行为的研究。
