轫致辐射
- 网络bremsstrahlung;bremsstrahlung radiation
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强流高功率脉冲电子束聚焦成mm量级的束斑后,打击到轫致辐射靶的过程中会产生回流离子,它会导致电子束被提前聚焦,在预定的靶面形成散焦。
Linac with mm diameter beam spot strikes the bremsstrahlung converter target to generate X-ray and the backstreaming ions .
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在加速器的内靶上产生的轫致辐射的最大光子能量将等于Ea。
Bremsstrahlung produced at an internal target of the accelerator will have a maximum photon energy equal to Ea .
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X射线轫致辐射谱的能谱转化技术
Energy spectroscopy changing technique for continuous bremsstrahlung X-ray spectroscopy
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HL-1装置等离子体轫致辐射径向分布的测量
Measurements of radial profiles of visible bremsstrahlung radiation in the HL-1 TOKAMAK
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质子的引力能先转化为辐射区域(以及与之相邻接区域)内的热能,然后再通过电子的热轫致辐射给出脉动相的硬X射线辐射。
At first the gravitational energy of protons transforms into heat in radiative region and then the radiative region gives radiation in pulsating phase by bremsstrahlung of thermal electrons .
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脉动相的平均谱可用一个kT≈40KeV的热轫致辐射谱来拟合;
The average spectrum in pulsating phase fits with a bremsstrahlung of thermal electrons with KT ~ 40 Kev ;
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有限温度QED中的轫致辐射修正
Bremsstrahlung Radiative Correction in QED at Finite Temperature
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在QED和QCD的框架中许多的理论工作都着重讨论了多次散射诱导轫致辐射导致的能量损失。
In the framework of QED and QCD many theoretical studies focus on radiative energy loss induced by the multiple scattering .
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观测和计算表明,硬x射线爆是由电流片中加速的高能非热电子所产生,而软X射线爆则由耀斑区的高温等离子体的热轫致辐射所产生。
3 , The observational results show that the hard X-ray burst is produced by high energy non-thermal electrons accelerated in the current sheet . But solf X-ray burst is produced by hot bremsstrahlung of high-temperature plasma in the flare region .
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用LiF-TLD测量脉冲电子加速器的轫致辐射场
Measurement of bremsstrahlung field from the pulsed electron accelerator by lif-tld
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在10Vμm场强下,对于医疗诊断常用的轫致辐射X射线谱,用X射线在aSe合金膜中产生一电子-空穴对约需45eV的能量。
The calculation indicates that about 45 eV is needed for X ray to release an electric hole pair in a Se alloy film at 10 V / μ m electric field .
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6MV医用电子直线加速器轫致辐射谱研究
Investigation of Bremsstrahlung Spectra of 6 MV Medical Linear Accelerator
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乙醇导入ICP导致等离子体连续辐射(即复合辐射和轫致辐射)强度减小和分子带(主要是CN带)强度增大。
The introduction of ethanol into an Ar ICP results in decrease of the intensity of the plasma continuous emission but increase of the intensity of molecular bands ( mainly CN band ) .
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高能工业CT采用9MeV电子加速器产生轫致辐射,利用高能X射线能够有效地穿透物质以及不同物质对射线吸收和散射不同这一原理来检查物体内部缺陷或内部结构。
Industrial CT adopts electron accelerator to produce the high energy X-ray bremsstrahlung , and makes use of the principle of different absorption coefficient and scattering coefficient when the X-ray cuts through different materials to check the internal blemish or internal structure of the material .
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在最近HT-6B低杂波电流驱动实验中。同时观测了从等离子体内部发射的硬X射线和限制器上的厚靶轫致辐射。
Recently , in the low hybrid current driven ( LHCD ) experiment both hard X-rays emitted from bulk plasma and bremsstrahlung out of thick targets on the limiter were simultaneously observed .
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用7个NaI(T1)闪烁探测器组成的阵列观测能量范围在20500keV,来自HT7托卡马克等离子体的硬X射线轫致辐射。
A seven-channel NaI ( T1 ) detector array installed on HT-7 superconducting tokamak has been used to measure the hard X-ray ( 20keV < Ehv < 500keV ) emitted from plasma .
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采用经钨带灯标准光源标定的多道石英光纤光学系统,测量了HL-1装置等离子体可见光波段轫致辐射功率的径向分布。
Using a multichannel quartz optical-fiber system calibrated with a standard tungsten strip lamp , the radial profiles of the visible bremsstrahlung radiation power in the HL-1 tokamak were measured .
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对宽角度轫致辐射光子的屏蔽,应考虑加速器工作负荷因子w,x射线束定向因子U,和有关人员居留因子T。对散射光子的屏蔽,根据Braestrup和Wyckoff的近似方法进行设计。
W must consider the accelerator work load factor W , orientation ( use ) factor U and the occupancy factor T of related persons so as to shield the photons produced in wide-angle bremsstrahlung , In the design of the LINAC laboratory of Nanjing University .
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叙述了在闪光Ⅰ上用6MV轫致辐射实验标定快响应GaAs光电探测器的原理实验结果以及分析讨论。
This report describes the experimental calibration principle of the fast response GaAs detector , using bremsstrahlung radiation pulse of the Flash-I setup and presents experimental results and analytical discussion .
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分析结果表明,与CME共生的是微波逐渐型爆发、尖峰爆发,其辐射机制主要是轫致辐射、回旋共振辐射、等离子体辐射及电子回旋脉泽辐射。
The findings indicate that they are gradual bursts and spike bursts . The dominating radiation mechanisms of the solar radio microwave bursts are bremsstrahlung , cyclotron resonant radiation , plasmas radiation and electronic cyclotron maser radiation .
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同轴虚阴极振荡器是GW水平的空间电荷器件,是基于在静电场中振荡的相对论性电子注的轫致辐射的高功率微波源。
Coaxial vircator ( VCO ) is a gigawatt-class special charge microwave tube , is a high power microwave source based on Bremsstrahlung radiation produced by relativistic electronic beams oscillated in static electric field .
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计算了轫致辐射中光子的辐射几率,在Eikonal近似下所得到的结果和半经典近似给出的结果一致。
We derive the probability of radiating a net energy ω in bremsstrahlung processes and the result in Eikonal approximation is the same as that obtained in the semi-classical approximation .
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作者对轫致辐射的散射矩阵S(T,-T)进行了计算,这里2T指轫致辐射中的相互作用时间。
In this paper we calculate the scattering matrix S ( T , - T ) for the bremsstrahlung process , here 2 T is the effective interaction time of the bremsstrahlung process .
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应用SophyDSXSPECT系统,以90Y、32P纯β类核素作为辐射源,通过模型实验选用不同准直器、不同能量窗宽等进行轫致辐射显像,以探讨最佳显像条件。
Sing Sophy DSX SPECT and 32P or 90y as the radioactive sources , the optimal bremsstrahlung imaging condition with different collimators , various widths of energy window , and different distance etc was discussed .
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在装置S-300上,通过测量真空磁绝缘传输线中电极间电子流轫致辐射和负载上的电流、电压等参数,研究了磁绝缘传输线中的电流损失特性。
The current loss in magnetically insulated transmission line ( MITL ) on pulsed power installation " S-300 " is studied by measuring bremsstrahlung between the electrodes , current and voltage in the load .
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通过Saha方程估算气体电离密度,利用电子与离子、电子与中性粒子的轫致辐射,电子与离子的复合辐射公式估算气泡的辐射强度。
The number density of electrons is estimated by the Saha equation , and in evaluating the light emission from bubbles , bremsstrahlung from electron neutral particle and electron ion collisions , as well as recombination radiation , are accounted for .
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轫致辐射靶的发射率及角分布分析
Analysis of Angular Distribution and Photon Yield from Bremsstrahlung Targets
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使用200MeV电子束及其轫致辐射的实验条件研究
Experimental Condition Study for Using 200 MeV Electron Beam and Its Bremsstrahlung
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厚靶轫致辐射谱的角分布计算
Calculation of Angular Distribution of Thick Target Bremsstrahlung Spectrum
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利用轫致辐射能谱测定高频腔体电压
Measurement of RF cavity voltage with X-ray energy spectrum