A new scanning system for alpha decay events as calibration sources for range-energy relation in nuclear emulsion

A new scanning system for alpha decay events as calibration sources for range-energy relation in nuclear emulsion
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一种新的α衰变事件扫描系统,作为核乳剂中距离-能量关系的校准源

DOI:
10.1016/j.nima.2016.11.044
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发表时间:
2017
期刊:
Nuclear Instruments and Methods in Physics Research A
影响因子:
--
通讯作者:
K.T.Thint
K.T.Thint
中科院分区:
--
文献类型:
--
作者:
J.Yoshida;S.Kinbara;A.Mishina;K.Nakazawa;M.K.Soe;A.M.M.Theint;K.T.Thint

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为了快速收集核乳化液中α衰变事件,研制了一种新的扫描系统——“顶点拾取器”,作为核乳化液中距离-能量关系的标定源。一台计算机控制的光学显微镜对乳化液层进行详尽的扫描,一台高速高分辨率相机拍摄它们的显微照片。专门的图像处理程序挑选出类似顶点的形状。通过KEK-PS E373实验的乳液片演示了α衰变搜索的实际操作。在电脑显示器上每小时进行的眼部检查工作中,检测到近28个事件的α衰减。这种方法的效率是传统眼扫描方法的近20倍。速度和质量对于即将到来的新实验J-PARC E07是可以接受的。
A new scanning system named “Vertex picker” has been developed to rapid collect alpha decay events, which are calibration sources for the range-energy relation in nuclear emulsion. A computer-controlled optical microscope scans emulsion layers exhaustively, and a high-speed and high-resolution camera takes their micrographs. A dedicated image processing picks out vertex-like shapes. Practical operations of alpha decay search were demonstrated by emulsion sheets of the KEK-PS E373 experiment. Alpha decays of nearly 28 events were detected in eye-check work on a PC monitor per hour. This yield is nearly 20 times more effective than that by the conventional eye-scan method. The speed and quality is acceptable for the coming new experiment, J-PARC E07.
使用基于内容可寻址存储器的符号替换进行光学并行图像骨架化。
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