IMPROVEMENT OF THE DETECTION EFFICIENCY OF THE IN-AIR SUBMILLI-PIXE CAMERA FOR BIOLOGICAL APPLICATIONS
IMPROVEMENT OF THE DETECTION EFFICIENCY OF THE IN-AIR SUBMILLI-PIXE CAMERA FOR BIOLOGICAL APPLICATIONS
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提高用于生物应用的空中亚像素相机的检测效率
DOI：
10.1142/s0129083512400050
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
H.Sugai et.al.
中科院分区：
文献类型：
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作者：
寺川貴樹;石井慶造;松山成男 他;H.Sugai et.al.
通过安装一个新的X射线探测器，与样品的距离更小的亚毫米PIXE相机的检测效率得到提高。基于探测系统的几何结构，通过估计探测效率，校正了位置相关探测效率引起的元素图像失真。铁和溴等重元素的特征X射线的探测效率比以前的系统高出11至23倍。与以前的系统相比，信噪比从1.8提高到2.5倍，检测限也从1/8降低到1/6。改进后的空气中亚毫米质子激发X射线照相机可用于生物学应用。
The detection efficiency of the submilli-PIXE camera was improved by installing a new X-ray detector with a smaller distance from specimens. The distortion of elemental images caused by position dependent detection efficiency was corrected by estimating the detection efficiency based on the geometrical configuration of the detection system. The detection efficiency of characteristic X-rays from heavy elements such as iron and bromine became from 11 to 23 times higher than the previous system. The signal to noise ratios was improved from 1.8 to 2.5 times higher and detection limit was also decreased from 1/8 to 1/6 compared to the previous system. The in-air submilli-PIXE camera with improved detection system can be useful to biological applications.