利用F—P标准具组实时测量被动入射激光波长

从理论上分析利用Ｆ－Ｐ标准具组实时测量被动入射激光波长的能量分布及信噪比，提供了计算公式及误差分析，给出了实验光路图，处理软件框图和一组实验照片，最后对给出的实验结果数据进行了讨论。     

熵的测定

本介绍了熵的测定原理及实验方法，建立了实验装置，并将现代化测量手段应用到物理实验中。对系统误差的来源进行分析，提出消除方法，最后给出实验结果。     

电位差计测量电动势实验中的非线性问题探讨

从理论上分析了电位差计测量实验中存在着的一及非线性因素，并给出了电位差计实验中避免产生非线性误关的方法，引入了划分线性与非线笥范围的数据，并对电位差计的线笥范围给出了较清晰的物理概念。     

分子碰撞振动激发的一种计算方法

研究原子和双原子分子碰撞的振动激发过程，需要求争一组振动耦合微分方程组，给出了此方程组的一种数值求解方法，推导了ＩＯＳ近似下的振动激发截面公式，将方程化简为无量纲形式，然后给出了解方程的方法，最后给出应用这种方法计算的一个例子，并与实验结果进行了比较。     

利用平面激光诱导荧光技术测量燃烧场内NO的浓度分布

 介绍了平面激光诱导荧光的原理及实验装置，利用可调谐OPO激光器，在甲烷 空气火焰及一些高能燃剂燃烧火焰中测得了NO分子在不同压力、不同燃烧时刻的系列荧光谱线及二维浓度分布，并给出实验结果分析。     

时空混沌系统在保密通信中的应用

以环形腔中激光振荡输出空间扩展模型为例，研究了多组信息同时编码的时空混沌加密及解密，给出安全可靠的加解密结果，并对抗破译能力进行了检验，完成了互联网上保密通信实验，结果令人满意。     

气轨上测重力加速度实验研究

在用气轨测重力加速度的实验中，给出了水平调节的简单方法。由线性相关性人手分析了实验的最佳条件，给出了消除系统摩擦阻力影响的新实验方案。     

随机共振实验

介绍了随机共振现象的基本原理、模拟电路,给出了一组实验结果,并绘制了实验曲红,分析了随机共振产生的原因。     

光电倍增管在超高音速气流速度测试中的应用

本文介绍光电倍增管在流场速度测量中的特点及重要性，给出实验系统，分析了光电倍增管参数对测试精度的影响。     

基于状态分析的电子系统抗辐射性能评估方法

建立了一种基于状态分析的电子系统抗辐射能力评估方法，该方法以电子系统中单元器件的辐射效应实验数据为基础，采用行为级电路仿真方法对电子系统功能状态进行分析，并应用蒙特卡罗方法模拟辐射损伤随机性对系统功能状态的影响，最终结合系统功能阈值，给出系统功能的裕量及不确定度估计，进而对系统抗辐射能力进行评估。为了验证评估方法的可行性，应用该方法对某模数转换电子系统的抗总剂量能力进行了评估，并将评估结果与该电子系统的总剂量效应实验结果进行了对比。结果表明该评估方法能够定量给出系统功能在受到辐射损伤后的变化，评估方法给出结果与实验结果在变化趋势和评估结论上基本一致。     

The effect of grain size and carbon content on the discontinuous deformation of steels

Data are given on an experimental study of the effect of grain size and carbon content in steels on the discontinuous character of their stress-strain diagrams. The results of the tests are interpreted in terms of dislocation concepts.     

基于NI-myDAQ数据采集器的混沌电路实验系统

混沌电路是大学物理实验课程中非线性系统教学内容的典型案例,为了提高学生对非线性实验内容的学习效率和自主学习能力,本文设计了一种基于NI-myDAQ数据采集器和LabVIEW软件平台的混沌电路实验系统.该系统可提高混沌参数微小变化的精密性,实时显示并记录不同参数下的混沌现象,能保存相图、时域图和数据.用该系统测量了蔡氏混...     

在相干理论的基础上分析光栅成像

本文在相干理论的基础上,推导了光栅成像中的光强分布和物像位置关系,并给出一组具有不同参数的实验照片及一组借助计算机绘制的强度分布图。     

Radiative corrections to the Drell-Yan process at large dilepton invariant masses

Electroweak radiative corrections to the neutral-current Drell-Yan process at large dilepton invariant masses are calculated. Asymptotic expressions are obtained for diagrams involving two-boson exchange, which represent one of the most significant contributions to the reaction being studied. The contributions of vertex diagrams and “soft” bremsstrahlung are also taken into account. A numerical analysis of electroweak effects with allowance for experimental constraints at the CMS facility is given. The result obtained from this analysis makes it possible to ensure a high precision in the region of high energies; therefore, it is applicable to future experiments at LHC.     

A laser Doppler velocimeter which measures the three components of velocity

A device for simultaneously measuring the three orthogonal components of a velocity vector is described. The system uses a laser beam passing twice through the region of flow under investigation. This allows one to determine the third component using only forward scattering. Vector diagrams which explain the mode of operation and experimental signals are given.     

Propagation of Alfvén waves in bismuth

The present study reports on experimental investigations about the phase velocity diagrams of Alfvén waves in the anisotropic solid-state plasma of bismuth. Alfvén-wave transmission at 34 GHz and 4.2 K has been observed, using an interference technique of high sensitivity. The experimental results are in good agreement with a theoretical model given by Buchsbaum, which makes only use of the anisotropic mass tensor of bismuth.     

A simple method for evaluating Goldstone diagrams in an angular momentum coupled representation

A simple and convenient method is derived for evaluating linked Goldstone diagrams in an angular momentum coupled representation. Our method is general, and can be used to evaluate any effective interaction and/or effective operator diagrams for both closed-shell nuclei (vacuum to vacuum linked diagrams) and open-shell nuclei (valence linked diagrams). The techniques of decomposing diagrams into ladder diagrams, cutting open internal lines and cutting of one-body insertions are introduced. These enable us to determine angular momentum factors associated with diagrams in the coupled representation directly, without the need for carrying out complicated angular momentum algebra. A summary of diagram rules is given.     

A probabilistic analysis of the Walker-Vause model for liquid binary mixtures

A simple method to calculate the probability distribution for a binary fluid mixture is presented. The method is applid to the Walker-Vause binary liquid model and different temperature vs composition phase diagrams are obtained. These diagrams are obtained using catastrophe theory methods. Comparison with some experimental data are also discussed and a simplified model leading to closed-loop phase diagrams is considered.     

Magnetoplasma waves in anisotropic semiconductors and semimetals

The propagation of electromagnetic waves in solids with electron and hole energy surfaces of second order placed in a magnetic field is investigated. The deduced dispersion relation is compared with measurements of the Alfvén wave velocity in bismuth. The theoretical and experimental results are in good agreement. In particular, it is clearly shown that for special orientations of the magnetic field switching from one mode to the other occurs. Parameters of the energy surfaces of bismuth are given by fitting the theoretical curves to the measured phase velocity diagrams.