time-of-flight相关论文
近年来,随着消费电子的高速发展,越来越多的厂商关注起了3D成像技术。特别是苹果公司的iphone X推出的智能3D人脸识别技术掀起了各......
LC-MS/MS is a powerful analytical tool for the analysis of polar,semi-volatile,and thermally labile compounds of a wide ......
Time Structure Study of the Imaging neutrons and Preliminary Energy Selective Neutron Imaging with T
Peking University Neutron Imaging Facility(PKUNIFTY)works on an accelerator-based neutron source with a pulse width of 1......
Some developments on neutron measurement techniques are required to meet diagnostic challenges,including very high level......
Detection and Identification of Components from Extracts of Cornus Officinalis by Liquid Chromatogra
The chemical components in traditional Chinese medicine (TCM) are responsible for their therapeutic effects and very imp......
为了减小锶原子跃迁谱线的多普勒增宽及频移,需要对锶原子进行激光冷却以降低它的速度,而一级冷却只能将原子温度降低至mK量级,这......
不同于数码相机使用光电探测器阵列来获取图像,单像素成像通过使用一系列掩膜图案对场景进行采样,并将这些掩膜图案中的信息与单像......
报道了一种新的测量大尺度冷原子团温度的方法。这种方法利用反亥姆霍兹线圈产生四极磁场，探测光沿着竖直方向逐点测量冷原子团的分......
利用电子对事例对北京谱仪Ⅲ飞行时间的测量误差,以及不同测量之间的关联因子随击中位置的变化进行了仔细的研究.加权的飞行时间由......
A collinear tandem time-of-flight mass spectrometer for infrared photodissociation spectroscopy of m
An apparatus based on collinear tandem time-of-flight mass spectrometer has been designed for the measurement of infrare......
A two-step high-precision Time-to-Digital Converter(TDC),integrated with a Single-Photon Avalanche Diode(SPAD),used for ......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
Effect of genetic sources on anatomical, morphological, and mechanical properties of 14-year-old gen
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
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The principle of the method for the BESⅢ event start time determination and the code construction are described.The inv......
利用电子对事例对北京谱仪Ⅲ飞行时间的测量误差,以及不同测量之间的关联因子随击中位置的变化进行了仔细的研究.加权的飞行时间由......
Application of Liquid Chromatography-High Resolution Time-of-flight Mass Spectrometry in the Detecti
Milk and dairy products are more and more popular with consumers due to their various nutrients, and their quality and s......
分析了在纳秒与皮秒级脉冲激光辐照下的半导体材料表面温度变化的机理。研究了通过测量材料蒸发原子的飞行时间来确定靶表面点阵温......
本文报道了将紫外光电子能谱（UPS）和飞行时间质谱（TOFMS）相结合的技术。该技术能够很好的拓宽UPS的研究领域。该仪器的特点是在不改变......
Recent progress in nuclear data measurement for ADS at Institute of Modern Physics is reviewed briefly.Based on the cool......
A method for analyzing the dynamic energy spectrum of intense pulsed ion beam (IPIB) was proposed. Its influence on beam......
To increase spatial resolution and signal-to-noise ratio in PET imaging, we present in this paper the design and perform......
Benchmarking of JEFF-3.2, FENDL-3.0 and TENDL-2014 evaluated data for tungsten with 14.8 MeV neutron
Integral experiments on tungsten slab samples were carried out on the D-T neutron source facility at China Institute of ......
利用一步紫外激光脱附和电离的飞行时间质谱法，测定了几种芳香烃分子：苯并［ｅ］芘、荧蒽、肉桂酸和２，５－二羟基苯甲酸的质谱。实验结果发现，苯并......
提出脉冲激光测距中利用并行计数法测量时间间隔。传统数字法测时误差主要是开始和结束两个脉冲周期的计数误差。为此利用CPLD高速......
利用脉冲激光束轰击金属样品表面时在周围空气中激发的光声信号研究了纯铜的激光烧蚀。实验中，用He—Ne探测光束偏转方法检测光声信......
脉冲激光测距在军事工业领域应用广泛，具有平均功率低、重复频率高和对光源相干性要求低等优点。通过提高脉冲激光测距中时间间隔的......
<正> 飞行时间(TOF)计数器,它是北京谱仪的重要组成部分。主要用于测量带电粒子的飞行时间,从而鉴别不同种类的粒子,同时参加触发......
本文介绍自行设计和建造并安装在反应堆水平孔道旁的大型热中子散射飞行时间谱仪的多路数据获取和显示系统。文中叙述了它的硬件设......
目前光子飞行时间技术在三维成像中应用广泛,但三维点云目标提取相关研究匮乏,因此提出了一种利用点云位置信息和强度信息相关联的......
交联聚乙烯绝缘电缆在铺设过程中弯曲产生的压力会造成电缆损坏。为了在日常检测维护中检测电缆是否发生不合理的弯曲形变,本文提......
介绍一种由扇形静电分析器组成的串级飞行时间质量分析器的选型与设计。此种仪器能够实现方向与能量双聚焦，可以结合激光探针离子源......
本工作采用LYSO晶体阵列和平板型位置灵敏光电倍增管H8500对TOF-PET探测器进行了初步设计，能分辨3．2mm×3．2mm的晶体阵列。与BaF2......
设计和构建了用于In-Beam TOF-PET时间校正的定时系统。该系统是由1对BaF2（φ40mm×45mm）晶体耦合到光电倍增管XP2020Q和标准核......
采用能量E-速度v关联技术测量裂变产物碎片的动能和飞行速度能精确测定裂变产物核的质量。本工作主要研究能量-速度关联技术的可行......
利用北京大学2×1.7 MV静电串列加速器产生的1.5 MeV Au^2＋和Si^＋束流轰击碳纳米管样品，用二次离子飞行时间质谱方法分析了二次离......
首次研究了二乙胺分子的多光子电离过程。实验是在无碰撞的高真空状态下进行的，用飞行时间质谱仪获得了染料激光器在４６４－４８６ｎｍ波段的二乙胺分......
介绍了激光质谱法的基本原理。利用已知苯和甲苯质荷比与飞行时间的关系。对质谱信号进行了精确定标．利用该方法对丙酮的多光子电离......
为了实现塑料管道容器中的超声波介质传播速度测量,研究一种基于正交解调算法的介质声速测量方法。为了验证方法的性能,对算法进行......
介绍了荷能团簇飞行时间质谱仪的原理及其在荷能团簇碰撞沉积装置中的物理设计。对实验中出现的若干问题进行了探讨，并提出了解决的......
Identification of SNP markers correlated with the tolerance of low-salinity challenge in swimming cr
Water salinity condition is an important factor for artificial propagation of the swimming crab(Portunus trituberculatus......
Two variants of application of a transaxial mirror with stigmatic spatial time-of-flight focusing in the time-of-flight ......
Plastic scintillation detectors for precision Time-of-Flight measurements of relativistic heavy ions
Plastic scintillation detectors for Time-of-Flight(TOF) measurements are almost essential for event-byevent identificati......
作为激光测距以及3D成像应用的核心技术之一,红外单光子计时读出电路(Readout Integrated Circuit,ROIC)配合集成的GM-APD阵列可实......
The time-of-flight mass spectrometry(TOF-MS),one of the mass spectrometry techniques,has been widely applied in the fiel......
本文讨论了提高飞行时间质谱仪的分辨率和灵敏度的基本问题，给出了仪器的结构设计。实验表明，其分辨率Ｒ〉２５００，灵敏度为３０Ａ／Ｐａ。......
Multi-reflection time-of-flight mass spectrometer (MR-TOF-MS) is one of the new experimental devices developed in recent......
Production of tachyons in, among other things, air showers would be in accordance with predictions of general relativity......
