散射

Distributed optical fiber sensor ; optical time domain reflectometer; Brillouin scattering ; Raman scattering

分布式光纤传感器；光时域反射仪；布里渊散射；瑞利散射

An over view of the research background is introduced, and the advantages of the fully distributed optical fiber sensor on base of the OFDR (optical frequency domain backscattering reflectometry) are presented.

本文以分布式温度和光纤微弯损耗为对象以光频域Rayleigh散射和Raman散射为基础研究了全分布式光纤传感器的测试平衡条件、模型和算法。

Chapter 5, the fully distributed temperature multimode graded-index fiber optic sensor based on spontaneous Raman optical frequency-domain reflectometry is further developed by two methods.

第八章，研究了基于Rayleigh光频域背向散射和Raman光频域背向散射理论同时测量微弯和温度分布的全分布式光纤传感器系统。

Experimental result shows that when the incident is vertically polarized, the head direction RCS average's variation along the relative curvature is of "W" shape and has 2 minimum values; when horizontally polarized, the head direction RCS average's variation is different in two bend fashions.

实验结果表明，垂直极化下头向雷达散射截面均值随弯度呈"W"形变化，有两个极小值；水平极化下两种弯折方式头向雷达散射截面均值变化趋势差异较大，上下弯折时呈"W"形变化，水平弯折时单调降低。

A look into his scientific pursuit from Rutherford α-particle scattering experiment

这种弹性散射作用产生的出射粒子方向与入射方向的夹角接近180°，最初由卢瑟福作了理论分析和实验测量，故亦称卢瑟福背散射。

This work discusses and compares the methods of deriving the Rutherford scattering formula,and analyses the Rutherford scattering in the low energy(e,2e) reactions through the study on electron impact ionization of helium.

讨论和比较了用不同理论方法导出卢瑟福散射公式；分析了低能电子入射单电离氦原子(e，2e)反应中的卢瑟福散射；尤其是通过卢瑟福公式给出了有效核电荷的表达式。

Proton generated from a Cockroft-Walton accelerator in the energy range of 30-100 keV were appropriately collimated and made to pass through a 10 g/cm^2 carbon foil. After Rutherford scattering, proton uniformly irradiated TLDs which were placed at the 20° behind and 20 cm away from the carbon foil. We used a channeltron behind TLD holder as the proton detector.

由Cockroft-Walton加速器提供之质子源，能量在30~100keV间，经准直后通过一10 g/平方公分之碳膜做拉塞福散射，散射后之质子均匀打在置於其后20°的压克力置装器内的热发光剂量计，利用压克力置装器后之一电子倍增器作为量测质子工具。

Structure dynamics ofstrongly reduced epitaxial barium titanate (BaTiO3-x) thin films were investigated byMicro-Raman scattering technique, Rutherford backscattering spectrometry, X-raydiffraction, and asymmetric rocking curves.

我们用显微拉曼、卢瑟福背散射谱、X射线散射和非对称摇摆等实验手段研究了在10-2到10-5帕氧气压下用激光分子束外延技术生长的BaTiO3-x薄膜的结构动力学特性。

3Regression analysis回归分析:an organization first draws a scatter diagram depicting the relationship between the business factor and workforce size.

组织首先要绘制一份散射图来描述商业要素和劳动队伍的大小间的联系，然后测算一条回归线——一条刚好穿过散射图上的那些点的中部的线。

Average scatterer spacing is one of the important parameters in describing the biological tissue microstructure and its ultrasonic scattering characteristics.

生物组织散射元平均间距是描述生物组织微观结构和超声散射特性的重要参数。

We are in a real jam.

我们的麻烦大了。

Hey, it's Ahmet from India, that foreign exchange guy.

看，那是印度的阿曼特，国际交换生