x-ray beam

[ˈɛksˌre bim][ˈeksrei bi:m]

[医] X线束, X线柱

  • Monolithic capillary X-ray lens can collect divergent white X-ray beam emitted from a point X-ray source into a quasi parallel beam .

    整体平行束X光透镜能把点X光源发出的发散 X 光束 聚焦后转变成准平行 X光束。

  • Experimental investigation of spatial coherence for soft X-ray beam in Hefei National Synchrotron Radiation Laboratory

    合肥国家同步辐射光源软 X 射线 空间相干性实验研究

  • The nanoprobe excites the sample with a strongly focused X-ray beam and collects the characteristic fluorescence signal that is re-emitted .

    纳米探针通过聚焦强 X 射线激发样品,然后收集发射出的特征荧光。

  • The results show that the higher is electron density the effect is more evident . It has a direct impact on the distribution of the beam intensity the diffraction and the deflection of the X-ray beam .

    结果表明,在 等离子体电子密度分布较高的区域,梯度效应明显,它直接影响光束的光强分布、衍射效应和 光束的偏转程度。

  • This paper presents a means of polychromatic X-ray beam hardening correction using a standard function to transform the polychromatic projection to monochromatic projection in large Industrial Computed Tomography ( ICT ) .

    介绍了大型工业CT的一种多色 X 射线硬化校正方法。该方法利用一个标准函数将多色投影值转化为单色投影值。

  • PIPA involves penetrating the material being tested with a photon ( X-ray ) beam .

    PIPA是对材料进行深入的光子( X光探伤探测。

  • Vacuum System Design for the X-Ray Lithograph Beam Line of Beijing Synchrotron Radiation Facilities

    同步辐射 X 射线光刻 光束线真空系统设计

  • Exposure Conditions in Sensitometry of Medical X-ray Film by Using X-ray Beam

    X 射线对医用X线胶片进行感光测定时曝光条件的探讨

  • This paper describes the design of a vacuum system for the X-ray lithograph beam line of Beijing Electron Positron Colliding Device .

    本文介绍了BEPC工程(北京正负电子对撞机)同步辐射 X 射线光刻 光束线真空系统设计。

  • The linear nonuniformity and nonlinearity of multiple detectors and the nonuniform intensity distribution of the X-ray sector beam result in horizontal striations in the scan image .

    其中多个探测器及前放的线性不一致性和非线性以及 X 射线 的强度角分布导致图像出现水平条纹和明暗条带。

  • Effect on dermal atrophy and subcutaneous fibrose caused by different high energy X-ray during external beam radiotherapy for cervical cancer patients

    不同能量 X线全盆外 照射对宫颈癌患者腹盆部皮肤萎缩和皮下组织纤维化的影响

  • X-RAY collimator subsystem is the important part of X-ray machine and its main function is confine the scope of X-ray beam to reduce the radiation harm to Patients ; Another function is realizing the multi-scope exposure on one film working with the film motion and shielding system .

    X光机限束器子系统作为X光机的重要组成部分,其主要用于对 X 光束的照射范围进行限定,以减少对患者的辐射,以及配合点片系统实现对X光胶片的多分片功能。

  • Then the attenuation coefficient that has been corrected is used for product back-projection reconstruction . Thus the effect caused by X-ray beam hardening is wipped out effectively in testing composites workpiece .

    对修正后的衰减系数再做卷积反投影重构,即可有效消除能 硬化造成的影响。

  • A2D-CT scan mode and its reconstruction algorithm which can scan large-sized work pieces are introduced with paraxial X-ray beam .

    介绍了一种二维CT扫描方式及其重建算法。它是一种利用近轴 X 光线,针对大型回转试件的二维CT检测方法。

  • This Paper studies the properties of neutral traps in soft X-ray beam irradiated SiO2 with the avalanche hot electron injection and MOS C-V techniques .

    本文用雪崩热电子注入技术与MOSC-V技术,研究了软 X 射线辐照引入于SiO2中的中性陷阱的性质。

  • X-ray beam propagation in an inhomogeneous plasma with a continuously varied refractive index

    X 射线在折射率连续变化等离子体介质中的传播

  • Methods From 1971 to 1998 . 7 patients with kimura 's disease were treated with low energy X-ray electron beam or high energy X-ray . The total dose of 10 ~ 40Gy was delivered and the therapeutic effects were retrospectively reviewed .

    方法回顾性分析了1971~1998年放疗的7例病人,使用低能 X线、电子 线或高能X线治疗,剂量10~40Gy。

  • For the fluorescent X-ray tubes several spectral distributions of different directions of primary X-ray beam must be determined and then the mean values of these data are calculated in order to obtain the effective spectral distributions .

    对荧光X射线管还应测定几个 射线 方向的原级谱加以平均求得有效原级谱。

  • In the soft X-ray beam line VariableAngle Plane Grating Monochromators is widely used with wide spectrum and highresolution .

    在软 X 射线 光束线中,变包含角单色器因为具有宽光谱、高分辨的等优点被广泛应用。

  • The method made the X-ray beam harden at first and then the kinds of prehardening materials and correction rule of beam hardening artifacts were obtained through experiment .

    该方法对 X 射线进行一定程度的预硬化,通过实验获得预硬化材料种类及射束硬化伪像的校正规律。

  • Neutral Traps in Soft X-Ray Beam Irradiated SiO_2

    X 射线辐照引入于SiO2中的中性陷阱

  • In this paper we have described the X-ray divergent beam technique i. e. the production of Kossel lines and their applications to the deter-mination of the orientation of single crystals and to the precision measure-ment of lattice parameters .

    本文介绍了 X 射线发散 Kossel线的产生及其在单晶定向和点阵参数测定方面的应用。

  • The test results will be a basis to develop a new PD location technique by using X-ray beam irradiation to power transformer .

    利用这一 特性有可能为变压器局部 放电的检测和定位提供一种新方法。

  • Geometrical Error due to the divergence of X-ray beam was analysed in an Ω & goniometer with stationary slit for residual stress measurement .

    本文分析了准 聚焦常规法应力测定中由于 X 射线有一定发散度造成的测量误差,并给出了修正方法。

  • The beam hardening will result in artifact as reconstruction image in X-ray ( TICT ) . In the paper we analyze the phenomenon of X-ray Beam hardening and discuss the relation between the X-ray beam sum and the transmission thickness .

    X射线TICT中,由于 射线硬化现象使图像重建时出现伪影。

  • The phenomenon of interference is presented when the X-ray beam hits the thin layer sample at glancing angle the angles corresponding maximal and minimal intensity of x-ray fluorescence are described when the phenomenon of double-beam interference or multiple-beam interference is occurred .

    介绍了掠射 X 射线与薄膜样品作用时产生的干涉现象,给出了X射线双光束干涉和多光束干涉产生极值的条件。

  • The coaxial adjustment of the X-ray beam aperture and shutter the filter positioning device is realized .

    并通过在不同位置快速测量 辐射 ,实现 X 射线 射束、光阑、快门、过滤片、定位装置同轴性的调整。

  • This paper describes a projection method for three - dimensional CT in which the angle between the main X-ray beam and the rotation axis of object is 45 ° .

    提出了一种主 射线与旋转轴成45°入射角、 探测器与旋转轴垂直的三维CT投影方法。

  • Objective : To evaluate the efficacy of radiotherapy in patients with keloids using kilovoltage X-ray electron beam and192Ir .

    目的:比较千伏 X线、电子线和192铱放射治疗疤痕 疙瘩的疗效。