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Alpha particle detection with a planar CdZnTe detector and relative simulations

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Radiation Detection Technology and Methods 2021年第4期5卷 609-617页

作者： Yu Xiang xiaopan jiang Chao Wang Fanhui Meng Yiding Han Xianchao Huang Long Wei Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Jinan Laboratory of Applied Nuclear Science Jinan 250131China

Purpose The performance of CZT inγ-ray and X-ray detection is growing rapidly in these ***,there are only a few reports on its utilization inαparticle ***,to study the properties of CZT for detection ofαparticle,a detection system has been manufactured,and a series of simulations have been *** A 22×22×0.7mm^(3) planar CZT detector is deployed to detect theαparticles from a radiation source containing Am-241 and Pu-239,while COMSOL MultiPhysics and GEANT4 are employed in the simulation of charge collection and interaction betweenαparticles and *** An energy resolution of 1.47%FWHM at 5.486MeV and 1.32%at 5.157MeV has been achieved.A simulated spectrum has been created,and it is analogous to the one from *** The experiment results show the potential of CZT inα*** simulations are confirmed effective and will guide a better design of the detecting system.

关键词： αparticle CZT detector Simulation Energy resolution Mobility-lifetime product Charge collection Interaction

Experiment validation of the high stability of long-term transmitted gamma photon counting of a new CdZnTe semiconductor detector and its preliminary applications

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Radiation Detection Technology and Methods 2022年第3期6卷 317-322页

作者： Chao Wang Yantao Liu xiaopan jiang Xianchao Huang Xiaoming Wang Yu Xiang Yiding Han Long Wei Zhiming Zhang Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Jinan Laboratory of Applied Nuclear Science Jinan 250131China

Purpose To develop a detector system with high stability in counting the detection of transmitted gamma photons,which can be applied in the area of non-destructive *** We used the cadmium zinc telluride(CZT)detector with single-polarity electrodes to substitute the traditional scintillator detector and front-end read-out electronics based on our self-designed low-noise charge-sensitive ampliﬁ*** and conclusion The energy resolution of 662 keV from 137Cs radioactive source was improved to 1.9%,and the relative standard deviation of different total counts of transmitted photons detected decreased to 0.05%when the counts were more than 5×107,which means the impact from the statisticalﬂuctuation of long-term gamma photons counting will not be a main obstacle to achieving high precision in the area of non-destructive *** preliminary experiment of inspecting the inner gaps in the metal rodsﬁlled with samples also proved to have good prospects for the CZT detector in non-destructive testing.

关键词： Non-destructive testing NDT CZT detector High energy resolution

YSO coded aperture camera based on depth of interaction for location correction

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Radiation Detection Technology and Methods 2023年第4期7卷 589-598页

作者： Yiding Han xiaopan jiang Haohui Tang Xiuzuo Liang Xuanhou Hu Xianchao Huang Zhiming Zhang Lei Shuai Jing Guo Long Wei Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing100049China Jinan Laboratory of Applied Nuclear Science Jinan250131China CAEA Center of Excellence on Nuclear Technology Applications for Nuclear Detection and Imaging TaiyuanChina

Purpose Coded aperture imaging was a widely used imaging method for radiation ***,the traditional gamma camera based on two-dimensional projection information for coded aperture imaging ignored the influence of the interaction depth of particles and detectors on the projection information,which reduced the imaging quality of the camera to some ***,a method of correcting the coded gamma camera based on the interaction depth of particles and detectors is proposed to improve the location accuracy of *** The camera developed in this work uses a 7×7 YSO crystal array coupled with two 7×7 Si-PM *** crystal is evenly divided into 11 parts in the depth direction,with a voxel size of 3×3×3 *** coded mask is a 13×13 array,which is a mosaic of two cycles of 7×7 modified uniformly redundant array *** depth resolution of the detector is obtained via the subsurface laser engraving dual-end readout *** obtaining the three-dimensional position information of the interaction point the projection information obtained by the detector is layered,and the image is *** to the spatial position information of the detector and the coded mask,the corresponding field of view of each layer of the detector is calculated,and the reconstructed image of each layer is amplified and superimposed according to the ratio of the field of view to obtain the reconstructed image combined with the depth *** and conclusion According to Monte Carlo simulation and radiation source imaging experiment results,this method can effectively improve the positioning ability of the *** the experimental scenario mentioned in the paper,the location accuracy can be improved by up to 1.54°.

关键词： Depth of interaction Coded aperture gamma camera YSO detector Location accuracy

《数控加工工艺与自动编程》教学方法和考核方式的改革与研究

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现代制造技术与装备 2016年第9期52卷 180-181页

作者：蒋小盼湖北工业大学工程技术学院武汉430068

从课程教学方法及考核评价体系等方面论述数控加工工艺与自动编程课程的改革思路,并提供了项目式教学法方法的具体实施过程与方法。

关键词：数控工艺项目教学法课程改革

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红外线触摸屏的专利技术综述

电子测试 2018年第23期29卷 124-125页

作者：陈硕姜晓盼国家知识产权局专利局专利审查协作河南中心河南郑州450000

相比于传统的按键输入方法,触摸屏输入更加的人性化,能够实现更加方便的人机交互,而红外触摸屏相比于其它触摸屏,具有多点触摸、使用寿命长、灵敏度高等优点。本文首先介绍了红外触摸屏的工作原理,并对红外触摸屏的专利技术发展进行了... 详细信息

相比于传统的按键输入方法,触摸屏输入更加的人性化,能够实现更加方便的人机交互,而红外触摸屏相比于其它触摸屏,具有多点触摸、使用寿命长、灵敏度高等优点。本文首先介绍了红外触摸屏的工作原理,并对红外触摸屏的专利技术发展进行了论述。

关键词：触摸屏红外线专利技术

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正电子湮没诱发俄歇电子能谱装置的物理设计

核技术 2009年第4期32卷 264-268页

作者：秦秀波王平姜小盼于润升王宝义魏龙中国科学院高能物理研究所核分析技术重点实验室北京100049 中国科学院研究生院北京100049

与X射线、高能电子或中子激发俄歇电子能谱相比,正电子湮没诱发俄歇电子能谱(PAES)具有极表面选择性、高信噪比、低辐照损伤等特点。本文介绍北京慢正电子强束流的PAES装置,采用4×10-3T磁场对正电子和俄歇电子进行输运,强弱磁场梯度对... 详细信息

与X射线、高能电子或中子激发俄歇电子能谱相比,正电子湮没诱发俄歇电子能谱(PAES)具有极表面选择性、高信噪比、低辐照损伤等特点。本文介绍北京慢正电子强束流的PAES装置,采用4×10-3T磁场对正电子和俄歇电子进行输运,强弱磁场梯度对俄歇电子进行平行化,法拉第筒对俄歇电子的能量进行调制,使得整个系统的能量分辨优于2eV。

关键词：俄歇电子能谱正电子湮没飞行时间能量分辨法拉第筒

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基于遗传算法的正电子湮没寿命谱拟合

核技术 2011年第3期34卷 179-182页

作者：马敏阳秦秀波姜小盼于润升王宝义吴伟明广西大学物理科学与工程技术学院南宁530004 中国科学院高能物理研究所核分析技术重点实验室北京100049

正电子湮没谱学是无损探测材料中纳米缺陷的有效手段,通过正电子湮没寿命谱可获得正电子在材料中的湮没状态以及材料内部电子密度分布的信息。本工作基于遗传算法(GA)的全局搜索、随机产生初值的特点,对正电子湮没理论寿命谱进行了多指... 详细信息

正电子湮没谱学是无损探测材料中纳米缺陷的有效手段,通过正电子湮没寿命谱可获得正电子在材料中的湮没状态以及材料内部电子密度分布的信息。本工作基于遗传算法(GA)的全局搜索、随机产生初值的特点,对正电子湮没理论寿命谱进行了多指数函数拟合的尝试,并用MATLAB语言编程实现了曲线拟合,得到的各组分寿命及相应强度。与LifeTime9.0的解谱结果比较,遗传算法求解寿命谱待估参数,具有不用赋经验性初值也不会陷入局部最优的优点。

关键词：正电子湮没寿命谱遗传算法多指数函数拟合

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全面二胎政策对学前教育的影响

科教导刊 2017年第11Z期 158-159页

作者：申平姜晓盼刘赅特阜阳师范学院数学与统计学院安徽阜阳236000

十八届五中全会之后我国实施全面二胎政策,面对人口新对策,年轻的父母们喜忧参半。全面二胎这一政策无疑将带来国内新生儿数量的大幅度增长,华东师范大学华爱华教授对记者说过:"人口数量直接影响不同学段教育机构的规模和资源的配置,而... 详细信息

十八届五中全会之后我国实施全面二胎政策,面对人口新对策,年轻的父母们喜忧参半。全面二胎这一政策无疑将带来国内新生儿数量的大幅度增长,华东师范大学华爱华教授对记者说过:"人口数量直接影响不同学段教育机构的规模和资源的配置,而对学前教育的影响是最大的。"全面二胎政策若是实行,学前教育将会首先引起政府关注,而学前教育的规模、方式、质量都会或多或少地被冲击。如何应对这一政策带来的诸多影响,必须对当前我国人口趋势及可能带来的影响进行深入分析,从而及时调整相应的政策和措施加以应对。

关键词：全面二胎政策学前教育影响

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移动终端触控解锁技术专利综述

河南科技 2017年第5期36卷 32-34页

作者：吴单单田凌桐姜晓盼国家知识产权局专利局专利审查协作河南中心河南郑州450000

随着触控技术的发展,移动终端的按键解锁操作逐渐被触控解锁技术取代,触控解锁技术成为一项热点研究,相关的专利申请居高不下。本文对现有的触控解锁技术相关的中国专利文献进行统计、分析,介绍该技术的特点及发展脉络。

关键词：触控解锁技术专利申请技术特点