草酰氯分子的紫外光谱

对草酰氯分子的多键解离方式进行理论和实验的研究。计算表明，草酰氯的第一电子激发态增强了Ｃ－Ｃ键而削弱了Ｃ－Ｃｌ键，解离出Ｃｌ原子和ＣｌＣＯＣＯ自由基。在３５１ｎｍ光解实验中观察到中间物ＣｌＣＯＣＯ的红外发光。该中间物很容量进一步热解为ＣｌＣＯ和ＣＯ，势垒仅为０．４ｅＶ。第二电子激发态形成Ｃ－Ｃ较强的反键轨道，造成Ｃ－Ｃ键的解离而产生ＣｌＣＯ，在２４８ｎｍ光解实验中，产生了振转激发的终产物ＣＯ。以瞬     

激光诱发SiH4＋CH4等离子体的发射光谱

本工作采用光学发射谱方法测量了ＴＥＡ ＣＯ２脉冲激光辐射ＳｉＨ４＋ＣＨ４系统产生的等离子体反应过程中的发射谱特性，探测到了Ｓｉ，Ｓｉ＾＋，Ｓｉ＾２＋，Ｃ，Ｃ＾＋，Ｃ＾２＋，ＣＨ，ＳｉＨ，ＳｉＨ＾＋，Ｓｉ２和Ｈ的特征辐射，研究了含Ｃ，Ｓｉ碎片粒子光谱随实验条件的变化规律，并讨论了反应条件对ＯＥＳ的影响。     

CCD变积累控制技术

在分析微光图像噪声特性的基础上，提出了通过对微光图像信号进行积分，抑制随机噪声的方法，发展了ＣＣＤ可变积累控制技术，研制了ＣＣＤ外围驱动控制和视频制式转换系统，使激光图像信号直接在ＣＣＤ电荷包中进行多帧累加，有效地抑制了随机噪声，提高了低照度与低对比情况下的信噪比和灵敏度，同时避免了后续实时处理电路的高原干扰，图像质量有了明显的改善。     

CCl＿4，CH＿2Cl＿2和CHCl＿3对磷脂酰胆碱紫外电子吸收光谱的影响

测量了ＣＣｌ＿４，ＣＨ＿２Ｃｌ＿２和ＣＨＣｌ＿３对生物膜中磷脂酰胆碱作用的紫外电子吸收光谱，实验结果表明，由于ＣＣｌ＿４，ＣＨ＿２Ｃｌ＿２和ＣＨＣｌ＿３分子结构的差异，三种溶剂的极性依次递增，磷脂酰胆碱π－π￣＊电子跃迁的吸收峰红移。磷脂酰胆碱在ＣＣｌ＿４中光谱呈单吸收峰，在ＣＨ＿２Ｃｌ＿２和ＣＨＣｌ＿３中光谱特征呈双蜂结构，存在聚集体的激子态跃迁，由此给出了脂质分子聚集状态的光谱依据。     

C_（60），C_（60）／C_（70）混合物在甲苯和1－甲基萘中的荧光光谱

测量了Ｃ６０，Ｃ６０／Ｃ７０混合物分别在甲苯和１－甲基萘中的激发谱和荧光光谱，用５３２ｎｍ波长光为激发源．比较了纯Ｃ６０及Ｃ６０／Ｃ７０混合物的荧光特性，对所观察到的发光谱进行了讨论．     

铜铬氧化物催化剂的结构与性能研究

用ＥＰＲ，ＸＲＤ，ＳＥＭ，ＸＰＳ，ＴＰＲ，ＤＳＣ等手段综合考察了铜铬氧化物催化剂结构与性能的联系，研究表明，油脂常压加氩时铜铬氧化物催化剂的活性组份是一种ＣｕＯ和ＣｕＣｒ２Ｏ４的紧密结合物，其中Ｃｕ，Ｃｒ分别以Ｃｕ＾２＋，Ｃｒ＾３＋形式存在，氢化反应后Ｃｕ＾２＋形式存在。氢化反应后Ｃｕ＾２＋被还原成Ｃｕ＾０，而Ｃｒ＾３＋不变，研究还表明，当焙烧气氛中氧较充分时会使催化剂中一部分Ｃｒ＾３＋氧化成Ｃｒ     

黑白CCD摄像机的近红外特性和应用

本文对黑白ＣＣＤ摄像机的光谱响应特性进行了具体的分析，讨论了近红外光谱特性和低照度下ＣＣＤ摄像机的光谱响应之间的关系，介绍了在低照度下和近红外照明下，黑白ＣＣＤ摄像机的使用条件。     

亚稳态分子CO（α^3П）猝灭过程

用流动余辉技术测定了亚稳态分子ＣＯ（α＾３П）被ＣＳ２，ＳＯ２，ＳＯ，ＮＯＣ１２，ＩＣ１，ＳＯ２Ｃ１２，ＳＣ１２，Ｈ２Ｏ，ＣＨＣ１３，ＣＨ２Ｃ１２，Ｈｅ和Ｎｅ猝灭的速率常数，并较为详细地讨论了ＣＯ（α）和ＣＳ２，ＳＯ２，ＳＯ，ＮＯ等分子的猝灭反应的可能出口通道，指出ＣＯ（α）被其他分子猝灭时，主要出口通道是化学反应，Ｅ－Ｅ和Ｅ－Ｖ能量转移，有时是几种不同的出口通道同时存在。     

激光电离飞行时间质谱法研究Al原子与卤代甲烷气相化学反应

利用分子束和飞行时间质谱技术研究了激光烧蚀金属Ａｌ原子与４种不同的卤代甲烷：ＣＣｌ４，ＣＦ３Ｃｌ，ＣＦ３Ｂｒ，ＣＦ４的气相反应，由激光电离飞行时间质谱检测的结果表明，Ａｌ与ＣＦ３Ｃｌ反应生成ＡｌＣｌ，而与ＣＦ３Ｂｒ反应生成ＡｌＢｒ，与ＣＣｌ４及ＣＦ４反应分别生成ＡＣｌ及ＡｌＦ。     

C42〈Al〉C32〈Si〉等混合物吸收光谱特性

用电弧放电＾［１］、Ｈｅ气对流的方法制备出了含Ｃ４２〈Ａｌ〉、Ｃ３２〈Ｓｉ〉、Ｃ２８〈Ｆｅ〉和Ｃ３０〈Ｃａ〉的混合物。对该混合物作了吸收光谱测量，并与Ｃ６０等全碳分子的吸收光谱作了比较，结果表明，Ａｌ、Ｓｉ、Ｃａ和Ｆｅ原子嵌入Ｃ４２等全碳分子后，并没改变吸收峰位，而只是改变了分子的π→π＾＊跃迁和ｎ→π＾＊跃迁几率。     

Spectroscopic and proton-acceptor properties of biologically active molecules of benzoic acid and its derivatives

We have measured the absorption, fluorescence, fluorescence excitation spectra, fluorescence quantum yields, and IR Fourier-transform spectra of aromatic acids in solutions. We have considered spectroscopic particular features of benzoic acid, its hydroxylated and methoxylated derivatives. Using quantumchemistry methods, we have calculated and interpreted electronic spectra. Data of calculations have been compared with experimental results. We have ascertained the main channels and mechanisms of photophysical relaxation processes in the molecules under study. Proton-acceptor properties of molecules of aromatic acids have been evaluated. We have analyzed in detail mechanisms by which hydrogen bonds are formed, intramolecular charge redistribution is realized, and the electron density of oxygen atoms changes. Spectroscopic indications of participation of oxygen-containing groups in intramolecular interactions and in intermolecular interactions with the formation of cyclic dimers have been revealed.     

非碳化热厚固体逆流水平火蔓延热解特性

根据反应边界层理论,解析热解表面传热传质过程,依据热厚固体内部温度分布,给出其热解表面传质数B-number函数以及热解模型。并以4 mm厚PMMA平板为对象,进行不同送氧量和不同车速燃烧实验,通过记录火焰长度、火焰距离热解表面的高度、蔓延速度、质量损失率以及底板温度等数据,推演热解表面热通量,表面传质数等热解动力学参数的变化规律,研究结果为解释热厚固体表面燃烧的发生、发展以及状态转条件奠定理论基础。     

执教六十年的回顾

文章概述了作者于1946-2006年期间在中央大学-南京大学物理系执教的经历，漫谈了教书、读书和写书的一些体会，介绍了在科学研究、人才培养和教材建设方面的若干成果。     

电场的MATLAB可视化方法

将导体球放到匀强电场中,研究电势和电场各分量的分布规律,是一个典型的电动力学问题.详细推导了极坐标和直角坐标系中的电势公式,求出了电场强度的表达式,推导电场线的方程,将公式无量纲化,应用MATLAB画出了电场强度的分布曲线和电场线以及等势线,充分反映了电场分布的规律.附录中列出了两个相关程序,可供读者参考.     

Survey of segregation alteration of hydrogen-helium mixtures via structure factor

In this study, thermodynamic instabilities in hydrogen-helium fluid mixture have been analyzed. These kinds of investigations are inevitable for indicating hydrodynamic transitions in Hydrogen-Helium fluid mixture. Therefore, first we have derived equation of state of mixture via Barker-Henderson statistical perturbation theory. Moreover, we have used Yiping radial distribution function in calculating perturbed terms. Via equation of state, we have calculated excess Gibbs free energy and the Gibbs free energy in the long wavelength limit. By means of this energy in hand we could estimate degree of hetero-coordination and segregations of this mixture which is a measure for defining thermodynamic instabilities. At last, these measurements have made us capable of anticipating thermodynamic instabilities and coordination of mixture in different concentrations.     

Processes in the Coulomb field of nuclei and electromagnetic properties of hadrons

Particle-production processes in the Coulomb field of nuclei at high energies have been considered, and the electromagnetic properties of hadrons (mesons and hyperons) have been investigated in these processes. The results of previous investigations have been summarized, and new data from the SELEX (Fermilab) and SPHINX (Institute for High Energy Physics, Protvino) facilities have been discussed.     

Numerical simulation of back discharge: Influence of pinhole geometry on the regime transitions

This paper presents numerical simulation of back discharge activity that is modelled at a pinhole in a dielectric layer on plane anode. First, for a given pinhole geometry, the transitions between back discharge regimes have been depicted as a mode diagram. Then, we have studied the influence of the dielectric layer thickness on the regime transitions. We have shown that increase in the layer thickness (within range of 0.02–0.2 mm) promotes the back discharge development. Finally, we have studied the influence of ‘crater configuration’. We have shown that ‘crater shape’ favours the back discharge ignition, whereas limits the resulting discharge development.     

Decay of97Zr to nuclear states of97Nb

The gamma rays emitted in disintegration of⁹⁷Zr have been investigated by Ge(Li) detectors, operated singly and in coincidence. In all, quanta emitted in thirty-five nuclear transitions have been observed. The gamma ray energies and relative intensities have been measured. Beta spectra have been studied with Ge(Li) detector and anthracene counter in coincidence. Nine beta spectra have been identified as to end point and intensity, either by direct measurement or by inference from the gamma ray data. The results of all measurements have been combined to provide a decay scheme for⁹⁷Zr. Nuclear excited states in⁹⁷Nb are indicated at energies of 743, 1,148, 1,251, 1,276, 1,434, 1,548, 1,652, 1,750, 1,765, 1,852, 1,958, 2,056, 2,106, and 2,247 keV. Possible spin-parity assignments have been suggested for some of these states.     

Investigation of vibrational relaxation of excimers

The excimer vibtational relaxation have been studied in the diffusional approximation, and stationary substantially non-equilibrium populations of high vibrational levels have been found. New formulae have been derived for quantum yield of UV lasing. Taking into account the vibrational relaxation the new effect of far-IR radiation amplification in the active media of excimer lasers is predicted.     

Investigation of the ETA-BETA II plasma edge by surface analysis of collector probes

To investigate the ion flux escaping from the plasma and the impurity flux released by the wall, collector probes made of graphite, silicon and titanium have been exposed to the deuterium plasma confined in the toroidal device ETA BETA II. The damages on the collector surfaces have been surveyed by a scanning electron microscopy (SEM) apparatus. The deuterium and impurity retention have been measured by elastic recoil detection (ERD) and Rutherford backscattering spectroscopy (RBS) techniques respectively. The implantation build-up has been investigated as a function of the exposure time. The deuterium dose in graphite saturates after a few discharges, whereas the metal impurities exhibit a linear increase in time. The deuterium flux and its radial dependence, inferred from the implanted concentrations, have been compared with those measured by Langmuir probes. Metal impurities have been identified and their relative abundances have been compared with the material wall composition. The impurity flux is found consistent with the global content in the plasma derived by spectroscopic measurements. The deuterium dose measured in different samples has been related to the backscattering coefficient of the materials. Finally, to investigate the damage on sample probes facing the plasma particle flow, erosion probes made of vitreous graphite with silver implanted at a fixed depth have been exposed to the plasma and the thickness change after exposure recovered.