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时间分辨测量    
相关语句
  measurement of time resolution
    Measurement of time resolution of the large area scintillator fiber detector
    RIBLL终端光纤矩阵探测单元时间分辨测量
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  time resolved measurement
A method allowing time resolved measurement of neutron spectra in pulsed discharges is described.
      
Other features are simultaneous matrix corrections, use of monitors lines for method enhancement, error recognition and correction using time resolved measurement and simple calibration of the method with aqueous standards.
      
Coupling Ion Chromatography with ICP-spectrometers, combined with time resolved measurement (IC-ICP-TRM) of the elution signals, was used to enhance the sensitivity of both ICP-AES and ICP-MS.
      
This result is in agreement with electron temperature values obtained by the time resolved measurement and the double probe method, respectively.
      
Simultaneous, highly time resolved measurement of all six aerodynamic force components is possible.
      
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  time-resolved measurement
The mechanism of SiH4 CO2 laser-induced absorption and dissociation is discussed on the basis of the results of the spectral and time-resolved measurement of fragment chemiluminescence.
      
Atomic-resonance-absorption spectroscopy (ARAS) was applied for the time-resolved measurement of Fe , N, and O atoms in gas mixtures containing Fe(CO)5 and NO, highly diluted in argon.
      
The time-resolved measurement of this absorption allows the separation of excited-state absorption and losses due to transient colour centres.
      
The time-resolved measurement is well matched to the numerical calculation.
      
Multichannel time-resolved measurement in far-infrared magnetoabsorption
      
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  time-resolved measurement
The mechanism of SiH4 CO2 laser-induced absorption and dissociation is discussed on the basis of the results of the spectral and time-resolved measurement of fragment chemiluminescence.
      
Atomic-resonance-absorption spectroscopy (ARAS) was applied for the time-resolved measurement of Fe , N, and O atoms in gas mixtures containing Fe(CO)5 and NO, highly diluted in argon.
      
The time-resolved measurement of this absorption allows the separation of excited-state absorption and losses due to transient colour centres.
      
The time-resolved measurement is well matched to the numerical calculation.
      
Multichannel time-resolved measurement in far-infrared magnetoabsorption
      
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Two channel elliptical crystal spectrometer (TCECS) is a very important diagnostic instrument for research on inertial confinement fusion (ICF) controlled by laser. Through time and space resolution detected simultaneously for X-ray, experimental condition of ICF can be judged correctly. There are many influencing factors for resolving ratio of TCECS, which are elliptical eccentricity, aperture width, light source not locating in the front focus of ellipse, the axis of detector does not pass through the back...

Two channel elliptical crystal spectrometer (TCECS) is a very important diagnostic instrument for research on inertial confinement fusion (ICF) controlled by laser. Through time and space resolution detected simultaneously for X-ray, experimental condition of ICF can be judged correctly. There are many influencing factors for resolving ratio of TCECS, which are elliptical eccentricity, aperture width, light source not locating in the front focus of ellipse, the axis of detector does not pass through the back focus, aiming and alignment error. This paper analyzes main influencing factors for resolving ratio, using Matlab 6.1 software does numerical calculation, and presents ways to assure and increase resolving ratio of TCECS.

双通道椭圆弯晶谱仪 (以下简称TCECS)是激光惯性约束核聚变研究中非常重要的诊断仪器 ,通过在两个通道上同时进行Χ射线的空间和时间分辨测量 ,从而对惯性约束聚变的实验情况做出正确的判断。TCECS分辨率的影响因素较多 ,主要有椭圆的离心率、狭缝的宽度、光源没在椭圆的前焦点上、探测圆轴线没有通过椭圆后焦点、瞄准对中等引起的误差。本文分析了影响TCECS分辨率的主要因素 ,用Matlab 6 .1软件进行了数值计算 ,并提出了保证和提高TCECS分辨率的措施。

Nomarski interferometer is an effective measurement to diagnose the electron density of laser-produced plasma. Using Raman compression cascade system with 1 054 nm incident light, a probe beam that has a 308 nm wavelength, 28 ps pulse duration and 1 mJ energy was obtained. The probe beam was applied in the polarization interferometry to measure the electron density of Au plasmas produced by 527 nm main beam at Xingguang-Ⅱ facility. The measured interferograms were analyzed to obtain the two-dimension profile...

Nomarski interferometer is an effective measurement to diagnose the electron density of laser-produced plasma. Using Raman compression cascade system with 1 054 nm incident light, a probe beam that has a 308 nm wavelength, 28 ps pulse duration and 1 mJ energy was obtained. The probe beam was applied in the polarization interferometry to measure the electron density of Au plasmas produced by 527 nm main beam at Xingguang-Ⅱ facility. The measured interferograms were analyzed to obtain the two-dimension profile of electron density. The result shows that with the aid of the probe beam, the electron density can be probed with a much higher temporal resolution and the disturbance of harmonic can be effectively avoided.

在星光Ⅱ铷玻璃激光装置上,采用两级喇曼压缩系统产生的波长为308nm的紫外光作为探针束,配合Nomarski偏振干涉仪对金平面靶冕区激光等离子体进行诊断。308nm光具有波长短、亮度高、脉冲时间短、相干性好的优点,作为探针束诊断冕区产生的等离子体电子密度,可以与高功率激光装置打靶激光同步,实现有效地脉冲压缩,同时避免等离子体中谐波分量的干扰。实验获得了308nm紫外探针光偏振干涉条纹图,在研究Abel反演算法的基础上,利用自行研制的基于Windows操作系统的实验数据处理软件,对实验数据进行了处理和分析,得到了冕区等离子体电子密度的空间分布。结果表明两级喇曼压缩系统配偏振干涉能有效抑制主束谐波影响,以更高时间分辨测量等离子体的更高密度区域。

The beam parameters of high energy and high current LIA are very important for the debugging work. For its ultra-fast response and high resolution, OTR is used to measure both spatial and angular profiles of an electron beam. A time-resolved measurement result of an electron beam produced by LIA can provide much more detailed information.Such a time-resolved measurement system for electron beam profile using OTR has been developed recently in the Institute of Fluid Physics of CAEP and has been put into practice....

The beam parameters of high energy and high current LIA are very important for the debugging work. For its ultra-fast response and high resolution, OTR is used to measure both spatial and angular profiles of an electron beam. A time-resolved measurement result of an electron beam produced by LIA can provide much more detailed information.Such a time-resolved measurement system for electron beam profile using OTR has been developed recently in the Institute of Fluid Physics of CAEP and has been put into practice. Typical time-resolved measurement results of an electron beam produced by 12 MeV LIA are shown in the paper. Many phenomena are observed for the first time. This system can capture 8 frame images at a time in the minimum time interval of 10ns while the exposure time is 3 ns.The frame time interval has 8 levels which change from 10 ns to 1 280 ns in power of 2 and the exposure time can change in three levels of 3, 5, 10 ns.The image has a resolution of 1 376×1 035 pixels and the object plane size can reach 80 mm.This system has provided a new measurement method in study of LIA.

高能强流电子束的束参数测量是加速器研制过程中重要的一项测量工作,由于光学渡越辐射具有时间响应快、分辨率高等特点而被用于测量电子束的具有时间分辨能力的束剖面、发散角、能量等多个参数;通过电子束束参数的时间分辨测量则能够了解电子束产生、输运中的问题,非常有利于加速器的研究与调试。一种具有时间分辨能力的、利用光学渡越辐射进行高能强流电子束束斑测量的系统在中国工程物理研究院被建立起来,并在12MeVLIA的电子束束斑的测量中用于电子束传输研究,该系统拍摄图像的间隔时间最小为10ns,最小的曝光时间为3ns,具有一次可以拍摄8幅图像的能力,并获得了12MeVLIA约100ns内相应的时间分辨的束斑变化情况,观察到了一些过去未观察到的现象,为加速器的研究提供了又一个新测试方法。

 
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