The use of diode array detectors in conjunction with continuous wave gas lasers for anti-Stokes Raman spectroscopy

The Raman spectrum of any molecule consists of two mirror-image signals, th e Stokes and anti-Stokes Raman spectra. In most cases, unless highly specific sampling conditions are used, the anti-Stokes signal is much weaker than that of the Stokes. The recent application of intensified diode array detectors to Raman spectroscopy has produced a marked increase in the sensitivity of the technique which makes a study of the anti-Stokes spectrum potentially more rewarding than it has been to date. The present study has shown that, although of limited use for general purposes, there are some specific instances where the anti-Stokes spectrum can be of considerable practical use. Such applications are to extend the operating range of the Raman spectrometer, to study photodegradable samples and for the analysis of samples which exhibit strong fluorescence.     

碱土金属氟卤化物中的Eu3+的荧光光谱特征

本文系统研究了MFX体系中Eu³⁺荧光光谱特征,着重讨论了X^-,M²⁺及杂质缺陷(主要为O^2-)对Eu³⁺发光的影响.     

共价氢化物与汞离子反应的研究：Ⅱ.痕量硒的高灵敏分析新方法

本文详细研究了硒化氢与汞离子反应条件并建立了氢化物发生－冷原子荧光法间接测定痕量硒的新方法。考察了各种实验条件，并将此方法用于合成水样分析，得到一些有意义的结果。     

喇曼感生克尔效应光谱的琼斯矩阵分析

介绍喇曼感生克尔效应光谱(RIKES)的琼斯(Jones)矩阵分析方法.探测光束的传输强度不仅由所经过的每一个光学器件的琼斯矩阵所决定,而且还受到强的泵波在非线性介质样品中感生依赖于强度的二向色性和双折射(克尔效应)对琼斯矩阵的影响.同时计及样品和光学器件由强泵波作用下感生应力和其他外部产生的线双折射对喇曼感生克尔效应光谱观察的不利影响,导出测量系统的功率传输函数的完整表达式和喇曼感生克尔效应光谱的实现观察条件,最后简述以甲笨(C_7H_8)液体为试样的喇曼感生克尔效应光谱实验结果分析.     

金属间化物（Sm1－xYx）Fe17Ny的占位及其相变研究

主要通过ｘ射线衍射和穆斯堡尔谱等手段研究金属间化物（Ｓｍ＿（１－ｘ）Ｙ＿ｎ）＿２Ｆｅ＿（１７）Ｎ＿ｙ（ｘ＝０,０．２,０．４,０．６,０．８和１．０;２＜ｙ＜３）中镱原子的择优占位、氮原子的占位以及结构相变问题。由实验结果得出以下结论：（１）当ｘ＞０．５     

芳烃混合物的三维荧光光谱的降秩因子分析

本文介绍了降秩因子（ＲＡＦＡ）方法，它是从一个多组分混合物中直接定量计算其中某一组分，而不必知道其他组分的物种及含量的一种定量分析的数学方法。它适用于双线性的数据。本实验首先将荧光分光光度计与外接计算机相连，以获得样品的激发－发射矩阵（ＥＥＭ），再用ＲＡＦＡ方法对蒽，萘，菲，芘，芴，Ｑｕ六种标样的一至五组分的混合物进行定量分析，获得满意的结果。     

微通道板表面发雾的AES分析

应用俄歇电子能谱对微通道板表面发雾区域进行分析。分析结果表明,发雾区碳含量比正常区高三倍。由此可推测出,发雾是由碳污染引起的,而这种碳污染很可能是残留于微通道板上的某些有机物在烧氢时碳化所致。     

Laser induced fluorescence of CdHg excimer

The fluorescence of CdHg excimer has been observed over the spectral range 220-320 nm for temperature between 660-820K. The spectra were excited in a Cd-Hg mixture contained in a quartz vapor cell by laser pulses at 326.1nm. The peaks of these bands are at about 232, 256 and 286 nm respectively. An interpretation has been given out according to the potential-energy curves.     

Fluorescence studies on the conformation of litorin in solution and in the presence of model membranes

The conformation of the nonapeptide hormone litorin has been studied in buffer and in the presence of lipids, using static and dynamic fluorescence. The results obtained show that, in buffer, the hormone probably exists in a collection of flexible conformers, slowly interconverting between them. The marked changes observed in fluorescence spectra and lifetimes upon addition of dimyristoylphosphatidylserine vesicles clearly show that the peptide interacts with lipids assuming lipid specific conformations. Interestingly, no significative spectroscopic changes are produced by exposure to dimirystoylphosphatidylcholine vesicles both in the gel and liquid-christalline phases, suggesting a requirement for negatively charged lipids during the process of hormone-membrane interaction.