钠蒸气中的双光子共振三光子电离和双光子混合共振三光子电离

在钠原子－分子混合样品中，分别运用双光子共振三光子电离以及双光子混合共振三光子电离，测得了钠原子４Ｄ态的电离流时间衰减曲线。由电离流与多光子动力学参数的关系，得到了４Ｄ态的光电离截面。     

钠蒸气中的双光子共振三光子电离和双光子混合并振三光子电离

在钠原子－分子混合样品中，分别运用双光子共振三光子电离以及双光子混合共振三光子电离，测得了钠原子４Ｄ态的电离流时间衰减曲线。由电离流与多光子动力学参数的关系，得到了４Ｄ态的光电离截面。     

六元杂环分子电学特性的理论研究

在第一性原理基础上，利用弹性散射格林函数方法，研究了六元杂环分子结2,5-哒嗪二硫酚 、2,5-吡嗪二硫酚和2,5-嘧啶二硫酚的电子输运特性，分析了终端原子的选取对杂环分子吡 啶电学特性的影响. 利用分子前线轨道理论和微扰方法定量地确定了分子与金属的相互作用 能参数. 计算结果表明，2,5-哒嗪二硫酚具有较好的电学特性，而2,5-嘧啶二硫酚在外加电 压较低时电导值比较小. 对于吡啶分子，选取硒原子作为终端原子时，其导电特性优于分别 以氧原子和硫原子作为终端原子的情况. 关键词： 六元杂环分子 伏安特性 电子输运 分子电子学     

运用线性量子变换理论和定态微扰论求解线型多原子分子振动的一般方法

采用键长伸缩和垂直键轴位移为内坐标,多维耦合谐振子、势函数中超过二次幂的项分别为零级近似和微扰的线型多原子分子振动模型,运用广义线性量子变换理论和定态微扰论对线型多原子分子振动进行了普遍求解,将线型多原子分子简谐振动能量本征值和态的求解转化成正定和半正定矩阵的对角化问题,微扰矩阵元、能量和波函数各级修正的计算转换到多维无耦合谐振子的本征表象中进行.并以CO2分子为例进行了具体求解.     

基于碰撞产生的频域和时域内的量子干涉效应研究

从理论和实验两方面对以往较少涉及的原子-分子混合体系中基于碰撞而产生间距较大多能级间的相干和两延时波包间的相干及量子干涉效应进行研究,揭示通过碰撞这种非相干过程可产生在频域内具有较大能级间距多能级间的相干和时域内两延时波包间的相干.运用半经典密度矩阵理论及缀释态理论对碰撞产生的多能级系统量子干涉效应进行计算和分析;同时实验上用ns脉冲染料激光器观察到钠原子-分子混合体系中基于等频双光子两步激发及钠原子-分子混合激发而产生的钠原子3S-3P(1/2,3/2)-5S(或4D)系统基于碰撞产生的频域和时域内的量子干涉效应.本工作为进一步运用非相干碰撞过程研究较大间距多能级间和两延时波包间的相干提供了一种新的有效的方法,可望在高灵敏高精度激光光谱、原子分子激发态结构信息及物理化学过程的控制等方面具有广泛的应用.     

多元混合工质筛选及配比原则的研究

1前言目前，混合工质组元的筛选及配比的优化问题一直困绕着人们。对于如何通过筛选合理的组元及配比，国内外学者对此问题进行了初步的研究。这些文献大都从物性着手，把注意力集中在物性、循环特性的理论和简单匹配上，往往忽略系统设备和实际应用中存在的问题对混合工质组元的筛选及配比的影响。本文从循环本身出发，探讨混合工质组元的筛选及配比的优化问题。2混合工质组元筛选的分析从理论上讲，几种优势互补的纯工质经合理配比，总可望得到与被替代物性能相当的混合物。但如何通过筛选合理的组元以保证因泄漏而再补充新混合工质后系统…     

刚性多原子分子的正则系综分子动力学算法

通过将Nose所定义的扩展系统哈密顿量推广到刚性多原子分子系统中，严格地推导了刚性多原子分子在正则系综下的运动方程.在此基础上，证明了依靠所给出的运动方程能得到平衡态的正则分布，并给出了该方程所对应的可逆而守恒的积分格式. 关键词： 刚性多原子分子 正则系综 分子动力学算法     

原子分子工程的设计基础—计算机及其程序设计

阐述了计算机科学对原子分子学科研究的重要作用，针对原子与分子领域中一些典型的问题，介绍了计算方法及程序设计，并对有关课题编出了计算程序。从而表明：借助于计算机可使原子与分子研究工作规范化、工程化，计算机及其程序设计是原子分子工程的设计基础     

原子—分子混合激发及所产生的受激和相干辐射

用适当波长的激光混合激发原子－分子样品，和通过原子－分子碰撞能量转移，可产生从紫外到红外宽波段范围内的受激和相干辐射，其中包括固定波长辐射，可调谐辐射以及宽带辐射以及宽辐射。这是一个物理涵义极为丰富并具有应用前景的研究领域。     

高激发态钠原子与分子碰撞能量转移及分子扩散带辐射的增强效应研究

在钠原子分子混合体系中 ,实验研究了加入缓冲气体对高位态原子分子碰撞能量转移和分子扩散带辐射的增强效应 ;运用瞬态碰撞模型作了理论计算 ,理论结果与实验结果相符合     

Some Further Results on the Fractional Cumulative Entropy

In this paper, the fractional cumulative entropy is considered to get its further properties and also its developments to dynamic cases. The measure is used to characterize a family of symmetric distributions and also another location family of distributions. The links between the fractional cumulative entropy and the classical differential entropy and some reliability quantities are also unveiled. In addition, the connection the measure has with the standard deviation is also found. We provide some examples to establish the variability property of this measure.     

Growth and vibrational spectroscopic studies of strontium tartrate (C4H4O6Sr): a nonlinear optical single crystal

The nonlinear optical crystal strontium tartrate (SrT) was grown by the gel method. The vibrational spectra were recorded to determine the symmetries of molecular vibrations. The microhardness of the crystal was also tested. The observed, infrared (IR) bands were also assigned and discussed. The optical transmission spectral study was also carried out. The nonlinear property is confirmed. Copyright © 2009 John Wiley & Sons, Ltd.     

The Interaction Between Levofloxacine Hydrochloride and DNA Mediated by Cu2+

Levofloxacin (LEV) is a fluoroquinolone antimicrobial agent. LEV also inhibits DNA synthesis and is bactericidal. The mechanisms of the interaction among LEV, DNA and Cu2+ are studied by fluorescence method. In the paper, the results show that LEV and Cu2+ can form binary complex, and also LEV and DNA can form complex mediated by Cu2+. The composition of the complex is determined. The affects to the reaction are also found.     

大学物理实验数据计算机检验、处理系统的研制

分析、介绍了大学物理实验数据检验、处理系统的功能,提出了建立系统的意义,分析了数据检验的实验类型,具体地给出了实现各个功能的方案以及相关技术。     

CPL技术在空间飞行器上的应用

本文对ＣＰＬ技术进行了简要概述,介绍了其工作原理与工作特性,并讨论了ＣＰＬ技术在空间飞行器上的可能应用方式。其中,对ＣＰＬ技术应用于空间设备的散热进行了全面阐述,并给予理论分析;此外,对ＣＰＬ技术应用于空间设备的主动热控制,也作了简要介绍;对ＣＰＬ技术未来有发展前景的应用方式进行了展望。     

SD对壳模型下原子核形状相变（英文）

在SD 对壳模型的理论框架下讨论了原子核形状相变模式。研究结果表明,该理论模型可以把相互作用玻色子模型中U（5）-SU（3）以及U（5）-SO（6） 形状相变模式再现出来,相互作用玻色子模型中有关临界点对称性的特征也可以很好地描述。本文同时也发现原子核从振动到转动的形状相变可以通过改变相互作用强度来实现。The nuclear shape phase transitional patterns were studied in the SD-pair shell model. The results show that the transitional patterns similar to the U(5)-SU(3) and U(5)-SO(6) transitions in the interacting boson model can be produced. The signatures of the critical point symmetry in the interacting boson model are also produced approximately. It is also found that the shape phase transitional pattern between vibration and rotation can also be produced by changing the interactional strength.     

Electrical conductivity studies of mixed phthalocyanine thin films

Thin films of mixed of Copper Phthalocyanine (CuPc) and Nickel Phthalocyanine (NiPc) are deposited onto a pure glass substrate by a simultaneous thermal evaporation technique at room temperature. The material D.C. electrical conductivity of films at room temperature and also films annealed at 523 K has been investigated. The optical absorption and band gaps of the films are also measured. The results show that the electrical resistance is lower for the mixed films compared with the pure samples and also the optical band gap decreases for the mixed samples compared to the pure samples.     

Structure and dynamics of water at liquid–vapour interfaces covered by surfactant monolayers of neutral stearic acid and charged stearate ions

The behaviour of water molecules at liquid–vapour interfaces with a surfactant monolayer of either stearic acid molecules or anionic stearate ions is investigated by means of molecular dynamics simulations. The density and dipolar orientational profiles and also the dynamics of translational and rotational motion of interfacial water molecules are calculated in the present work and the results are compared with the bulk liquid water and also of liquid–vapour interface of surfactant-free water. The present simulation results are also compared with available experimental results of similar interfacial systems with a monolayer of either neutral or ionic surfactants.     

Nonlinear electrostatic waves in inhomogeneous dense dusty magnetoplasmas

The nonlinear electrostatic drift waves are studied using quantum hydrodynamic model in dusty quantum magnetoplasmas. The dissipative effects due to collisions between ions and dust particles have also been taken into account. The Korteweg-de Vries Burgers (KdVB) like equation is derived and analytical solution is obtained using tanh method. The limiting cases of KdV type solitary waves, Burger type monotonic shock waves and oscillatory shock solutions are also presented. It is found that both hump and dip type solitary structures are possible in quantum dusty plasmas. However, amplitude and width of the nonlinear structure depend on the dust charge polarity and its concentration in electron-ion quantum plasmas. The monotonic shock like structure is independent of the quantum parameter. It is found that shock strength is increased in the presence of positively charged particles in comparison with negatively charged dust particles. The oscillatory shock structures are also obtained and it is found that change in dust charge polarity only shifts the phase of the oscillatory shock in plasmas. The numerical results are also presented for illustration.     

新型螺线管轴向磁场实验(演示)仪

着重说明了新型螺线管轴向磁场实验（演示）仪的研制背景、原理和特点;实验（演示）仪的系统硬件和软件。它既便于实验,也便于课堂演示。