Radioactivity and geometrical distribution measurements of α-emitter specimens with the imaging plate
Radioactivity and geometrical distribution measurements of α-emitter specimens with the imaging plate
复制标题
使用成像板测量 α 发射体样本的放射性和几何分布
DOI：
10.1016/0168-9002(92)90123-l
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发表时间：
1992
影响因子：
1.4
通讯作者：
A. Matsumura
中科院分区：
文献类型：
--
作者：
C. Mori;A. Matsumura
成像板探测器的灵敏度比常规X射线胶片的灵敏度高出约100倍，作为辐射的二维位置探测器，它正在许多领域中得到扩展。成像板的面积很大，为20 cm × 25 cm，甚至更大的35 cm × 43 cm，空间分辨率约为100 μm × 100 μm（即一个像素）。这里研究了板对α射线的灵敏度;甚至可以检测到单个入射α射线，并且发现信号输出在每个像素至少三十条入射α射线的情况下呈线性。在滤纸上收集核燃料处理室的环境空气中的钚细颗粒。然后将板暴露于从过滤器发射的α射线，并且可以通过板的输出信号强度来确定细颗粒的直径。
Imaging plate detectors, having a sensitivity of about a hundred times greater than that of conventional X-ray films, are finding extension into many fields as a two-dimensional position detector for radiations. The imaging plate has a large area, of 20 cm × 25 cm, or even larger 35 cm × 43 cm, and a spatial resolution of about 100 μm × 100 μm (i.e. a pixel). The sensitivity of the plate to α-rays was investigated here; even a single incident α-ray can be detected and the signal output was found to be linear up to at least thi thirty incident α-rays per pixel. Plutonium fine particles in the environmental air of a nuclear fuel processing cell were collected on a filter paper. The plate was then exposed to α-rays emitted from the filter and the diameters of the fine particles could be determined by the output signal intensity from the plate.