散射因子

电子的原子散射因子解析表达式的拟合

Fitting the atomic scattering factors for electrons to an analytical formula

硅镓锗砷的反常散射因子

Anomalous Scattering Factors of Si , Ca , Ge and As

目的：按Sp的定义，直接测量体模散射因子Sp。

Objective : The phantom scatter factor Sp was measured directly according to its definition .

为了提高准确度，用蒙特卡洛法计算电子背散射因子R，并将此因子用于定量分析。

In order to improve the accuracy , the electron backscattering factor R is calculated by using Monte-Carlo method and is applied to the quantitative analysis .

Mie散射因子的计算方法及其应用

Methods of Numerical Calculation of Mie 's Scattering Factor and its Application

目的测量60Co机准直器散射因子（Sc）的性质，为临床使用提供依据。

Purpose The properties of collimator scatter factor ( Sc ) was measured in order to form the basis of clinical usage .

目的建立一种简单准确适合于临床应用的准直器散射因子（Sc）的计算模型。

Objective To design up a simple and accurate calculation method for collimator scatter factor ( Sc ), which can be easily implemented in clinical works .

由于使背散射因子的计算与能谱相结合，这种方法不但可以避免MonteCarlo的冗长计算，还能进一步提高定量分析的精度。

Complicated calculations such as the Monte Carlo method were avoided , and the quantitative Auger analysis accuracy could be further improved since the calculations of backscattering factor was based on the spectra .

本文通过MonteCarlo方法模拟计算了定量俄歇电子能谱分析（如对Ni的L3VV俄歇电子和Pt的M5N67N67俄歇电子）中的背散射因子。

Using a Monte Carlo simulation method a novel calculation on the backscattering factor in quantitative Auger electron spectroscopy ( AES ) analysis has been performed , for Ni L_3VV and Pt M_5N_ ( 67 ) N_ ( 67 ) Auger excitation as examples .

本文从基于原子散射因子的光学特性出发，讨论了X射线在理想和非理想界面的反射特性，探讨了宽带多层膜材料W、B4C的选定方案；

From optical characteristics of materials based on the atomic scattering factor , the thesis introduces the reflectivity characteristic of X-ray from ideal and nonideal interface , discusses the method of selecting and confirming materials W 、 B4C for broadband multilayer .

俄歇定量分析中确定背散射因子的一种新方法

A new method to determine backscattering factors for quantitative auger analysis

用蒙特卡罗方法计算俄歇电子谱中的背散射因子

A calculation method for AES backscattering factor by Monte Carlo simulation

散射因子、计数丢失和随机符合测量；

Scatter fraction , count losses and randoms measurement ;

医用直线加速器矩形野散射因子的简便计算方法

Simple Calculation Method to Scatter Factor to the Rectangular Field of Linear Accelerator

仅由原子散射因子虚部引起的布拉格情况的衍射特征

Diffracting Characteristics of Bragg Case of X-Rays Induced by the Imaginary Part Atomic Scattering Factor

高能电子的原子散射因子，晶体热振动的各向异性及温度因子

Electron Atomic Scattering Amplitudes , Anisotropic Thermal Vibrations and Temperature Factors in High Energy Electron Diffraction

平衡帽材料对准直器散射因子测量值的影响探讨

The study of effects of the material of buildup cap to the measured value of output factor

基于双源光子模型的准直器散射因子新算法

A simple and accurate algorithm based on a dual source photon beam model for calculation of collimator scatter factor

计算得到的背散射因子能够很好地描述文献中报道的俄歇电子信号强度随入射电子能量以及入射角度的实验变化关系。

The calculated backscattering factors are found to describe very well an experimental dependence of Auger electron intensity on primary energy and on incident angle in literature .

方法（1）通过测量方野的散射因子，建立方野散射因子与射野边长的拟合公式；

Methods Firstly , the scatter factors of square fields have been measured and the relation between the scatter factor and the length of fields has been made ;

目的建立一种适合于临床应用的加速器散射因子Sc.p的简便计算方法。

Objective To design up a simple method to calculate the scatter factor Sc , p of X ray linear accelerator , which can be implemented in clinical works .

引入原子散射因子、角因子和温度因子等校正因子，利用原子散射因子的近似表达式，导出了亲水涂层结晶度的计算公式；

The formula of calculating crystallinity is deduced by the combination of the atomic scattering factors , angle factors and temperature factors , and the surface crystallinity of the hydrophilic coating is calculated .

结果采用该方法计算医用加速器散射因子的最大误差在0.5%以下，而采用面积-周长比原理确定的等效方边长，最大误差达到3%左右。

Results The most error is lower than 0.5 % to apply the method to calculate the scatter factors , however the most error is about 3 % according to the principle of area-linear rate .

同时引入方向散射因子的概念，并通过对方向散射因子变化规律的研究来获得中子的大气散射规律。

Space distribution law of neutron fluence is obtained by curve fitting , additionally , a new concept named scattering factor in different angular director is introduced and used to conclude the scattering behavior of neutron transporting in atmosphere .

然后，订正以后的水云雷达信号廓线指数衰减的斜率及多次散射因子被进一步用于反演低层水云顶的平均消光系数。

Then , the slope of the exponential decay of the validated water cloud attenuated backscatter profile , and the multiple scattering factor are used for deriving the mean extinction coefficient of low-level water cloud droplets close to cloud top .

在Mie理论的基础上，从单个球形粒子的散射效率因子出发，得到了1~6μm群体粒子的散射系数。

Based on Mie 's theory , the scattering efficiency factor of a spherical particle is analyzed , the scattering coefficient of spherical particles 1 ~ 6 μ m in radius is presented .

俄歇电子能谱中背散射修正因子的计算

The calculation of backscattering factors in Auger electron spectroscopy

剂量计算公式总散射校正因子测量深度的研究

Measurement with total scatter calibrate factor at different depths in the calculation of prescription dose

弹性体高聚物/多官能团单体体系的辐射交联密度完全电磁相互作用等离子体的电子密度涨落和激光散射结构因子

Radiation crosslinking density of elastomers sensitized by polyfunctional monomers On Electron Density Fluctuations and Radiation Scattering in a Plasma

基于两种方法计算了长方体、椭球体和圆柱体三种不同形状粒子以及等体积球形粒子在不同尺度参数下的散射效率因子。

The scattering efficiency factors of cuboid , ellipsoid and cylinder particles were calculated by using the DDA method under different size parameters , and compared with the results of the equivalent-volume spheres based on Mie theory .