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束流     
相关语句
  beam
    A NEW METHOD OF THE ION BEAM EMITTANCE MEASUREMENT
    一种测量束流发射度的新方法
短句来源
    MEASUREMENT OF BEAM BURSTS WITH WIDTH OF 1 NANOSECOND FOR A 2.5 MeV PROTON ELECTROSTATIC ACCELERATOR
    2.5MeV质子静电加速器lns宽度的脉冲束流测量
短句来源
    A beam optical transport program transplanted program "OPTIC-Ⅱ" at PDP-11/34 computer
    束流光学计算程序OPTIC-Ⅱ在PDP-11/34机上的移值
短句来源
    Design and Test of Composite Quadrupole Magnets for the 400MeV Beam Transport line
    400MeV束流输运线四极磁铁的研制与测试
短句来源
    APPLICATION OF GRAPHICAL DESIGN METHOD TO BEAM TRANSPORT SYSTEM
    束流传输系统的图解设计法的应用
短句来源
更多       
  beam current
    BEAM CURRENT DIAGNOSING IN LARGE AREA DIODES
    大面积二极管束流诊断
短句来源
    EXPERIMENTAL STUDY ON VIRCATOR WITH HIGH IMPADANCE AND LOW BEAM CURRENT
    一种高阻抗、低束流虚阴极器件的研制
短句来源
    According to these results, we design cathode assembly for a DC 500mA electron gun with a planar 6mm-diameter cathode of single crystal LaB6, and measured 520mA beam current at 1700K, which accelerating voltage and distance between cathode and anode is 9kV and 12mm.
    依据该实验结果,选择φ6单晶LaB6作为500mA直流电子枪的阴极,实验参数:阴阳极间距12mm、阴阳极电压9kV、阴极温度1700K, 法拉第筒测得520mA束流
    Improvement of beam current measurement system on Hefei Light Source LINAC
    合肥光源200MeV直线加速器束流流强测量系统的改进
短句来源
    Modulation and Computation of Ion Beam Current Transmission for the 200 keV Continuation/Pulse Neutron Generator
    200keV直流/脉冲中子发生器束流输运模拟计算
短句来源
更多       
  ion beam current
    Modulation and Computation of Ion Beam Current Transmission for the 200 keV Continuation/Pulse Neutron Generator
    200keV直流/脉冲中子发生器束流输运模拟计算
短句来源
    In a pulsed mode, a time-average ion beam current in excess of 10 mA has been extracted for a range of elements such as Al, Ti, Cr, Nl,Cu,Nb etc. The ion beam current depends on cathode material, arc current, extractor voltage etc.
    在脉冲工作方式下,引出了Al、Ti、Cr、Ni、Cu和Nb等元素的离子,平均束流达10mA以上,引出束流与阴极材料、弧流、引出电压等有关。
短句来源
    The working pa-rameters of the neutron tube are ion source anode voltage 3.3 kV, the ion source discharges current 1.8 mA, the accelerating voltage 134 kV, and the ion beam current is 740μA.
    中子管的工作参数为离子源阳极电压3.3 kV,离子源放电电流1.8 mA,加速高压134 kV,束流740 μA。
短句来源
    The principle of the manufacture technology and the performance of the calorimeter are described in this paper. The ion beam current of the accelerator with high sensitivity and precision is measured by the calorimeter.
    本文介绍了一种高灵敏度、高精度的束流测量装置——量热器的原理、制作工艺及其性能。
短句来源
  beam phase space
    BEAM PHASE SPACE AND BEAM EMITTANCE MEASUREMENT
    束流相空间与束流发射度椭圆的对应
短句来源
    NONLINEAR TRANSPORT OF ACCELERATOR BEAM PHASE SPACE
    加速器束流非线性传输的逆变换
短句来源
    From the projection of 6 -dimensional phase space on its 2 -dimensional subspaces, the relationships between the 2 -dimensional beam phase space ellipse and the measured beam emittance are deduced.
    研究了束流传输理论沿用的束流相空间与实测束流发射度椭圆之间的对应关系,推导了束流相空间参数与束流椭圆对应关系的表达式,为束流传输理论与束流测量实验之间的相互验证提供了直接依据。
短句来源
    According to the theory of beam phase space, the projective density distributions in four dimensional and two dimensional trace space are derived for some space charge distributions often used in accelerator physics. And, the relation between beam emittance and brightness with density distributions is developed too.
    针对加速器中几种常用的束流密度相空间分布形式,根据束流相空间理论,推得了它们在四维和二维径迹空间中的投影密度,并给出了束流发射度和亮度与束流密度分布的关系式,为加速器束流测量和束流诊断提供理论依据。
短句来源

 

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      beam
    Microlocal Analysis of an FBP Algorithm for Truncated Spiral Cone Beam Data
          
    Derivation and analysis of a new reconstruction formula from cone-beam projections
          
    A new method to compute the first derivative of 3-D Radon transform is given for cone-beam data taken from any orbit.
          
    Smith [11] and Grangeat [5] even derived cone-beam inversion formulas which are the basic work in fully 3-D image reconstruction algorithm and are used extensively now.
          
    Boundary stabilization of nonuniform Timoshenko beam
          
    更多          
      beam current
    The influence of proton irradiation (energy, 18 MeV; beam current, 300 nA) with doses of 5 × 1014, 1015, and 5 × 1015 cm-2 on samples of SiO2-BaO-based glass coatings is investigated.
          
    It was shown that significant steady-state currents (1 to 10% of the electron beam current) were observed only if the thickness of blocking (unirradiated) layer did not exceed 5 μm.
          
    It was found that depending on deposition conditions, the resistivity ρ of applied lines varied from 4 × 10-2 to 103 Ω cm, decreasing rapidly with an increase in the electron beam current.
          
    The Simulation of a Beam-Plasma Discharge with the Beam Current Exceeding the Limiting Vacuum Current
          
    Results are given of simulation of the space-time dynamics of a beam-plasma discharge with the beam current exceeding the limiting vacuum current.
          
    更多          
      ion beam current
    The source ensures an argon ion beam current of up to 80 mA at a discharge current and voltage of 1 A and 115 V, respectively, and a pressure of 1.5 × 10-2 Pa in the chamber.
          
    Depending on the geometric parameter la (the anode length to diameter ratio) and pressure, maxima are observed in the discharge current and in the ion beam current extracted from an aperture at the center of the cathode.
          
    Composite layers made in sapphire by implantation of 40-keV Cu+ ions at a dose of 1 × 1017 cm-2 and an ion beam current density varying from 2.5 to 10 μA/cm2 are studied.
          
    Metal-nanoparticle-containing composite layers were synthesized by implantation of 60 keV Ag+ ions into a soda-lime silicate glass to a dose of 3×1016 ion/cm2 at an ion beam current density of 3 μA/cm2 and a substrate temperature of 35°C.
          
    Sapphire-based composite layers implanted with 40-keV Cu+ ions to a total dose of 1.0×1017 cm-2 at an ion beam current density varied from 2.5 to 10 μA/cm2 were studied using Rutherford backscattering and optical reflectance methods.
          
    更多          
      beam phase space
    It will allow the broad, and in many respects novel use of stored, cooled ion beams with superior beam phase space.
          
    It will allow the broad, and in many respects novel use of stored, cooled ion beams including antiprotons with superior beam phase space.
          
    If sufficient electrons are accumulated within the beam, severe distortion of the beam phase space can result.
          
    The monitor enables us to measure the beam distribution in the longitudinal beam phase space.
          


    A parallel-plate ionization chamber and coaxial ionization chamber baving thin wall electrodes which is suitable for monitoring or for dose measure-meats are described, the energy of electron is varied from 8 Mev to 20 Mev.1 rad/min

    描述了适用于剂量监测和剂量测量的薄壁电极平板电离室和同轴电离室。电子束能量自8Mev到20Mev。对一定能量的电子束,剂量率自1拉德/分到10000拉德/分,电离室的电离电流和电子束流成正比。当剂量率(X射线)为8仑/分时,电离室输出电离电流10~(-9)A。

    The improvement of the original 1.2m cyclotron to enhance its accelerated particles-energies with increasing main magnet exciting current and reshimming the magnetic field is described. After the improvement, the energy of. deutron particles was enhanced from 13.6MeV to 16MeV, and the energy of a particles to 32MeV.

    本文介绍采用加大主磁场激磁电流并重新填补磁场的办法,发掘现有1.2米回旋加速器的潜力。改进后,使氘束能量由13.6MeV提高到16MeV,使α束流提高到32MeV。

    A microsecond width single pulse beam has been modulated from a 2.5 MeV Vamde Graaff accelerator. With the beam falling on the surface of a PIN or Au-Si surface-barrier semiconductor detector, the wave shapes of the detector output current arid the-beam current were photographed simultaneously and compared with each other to find the influence of charge deposition in depletion region on the time plateau of the current wave shape and the -collecting time, thus to obtain the collecting efficiency and other parameters....

    A microsecond width single pulse beam has been modulated from a 2.5 MeV Vamde Graaff accelerator. With the beam falling on the surface of a PIN or Au-Si surface-barrier semiconductor detector, the wave shapes of the detector output current arid the-beam current were photographed simultaneously and compared with each other to find the influence of charge deposition in depletion region on the time plateau of the current wave shape and the -collecting time, thus to obtain the collecting efficiency and other parameters. Under different beam magnitudes and biases, changes in output current wave shapes of some home-made PIN and Au-Si detectors were measured.

    利用2.5MeV质子静电加速器调制成微秒宽度的单次脉冲束流,照射国产离子注入PIN及Au-Si面垒型探测器表面后,观察从示波器屏幕上同时拍摄的探测器输出波形和束流波形并加以比较,由此观察耗尽区内部电荷积累对平顶畸变、收集时间大小的影响及收集效率等参数。

     
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