WLY100型顺序扫描ICP光谱仪设计方案的一些考虑

本文对国产ＷＬＹ１００型顺序扫描ＩＣＰ光谱仪在设计中对单色仪，高频发生器，扫描机构，测光系统，短紫外光域的测量，恒温，气流控制与软件编制等方案的选择作了详尽的阐述，稳妥的方案使研制工作顺利进行，保证整机一次成功。     

应用多种检测方法提高定性分析水平

本文报道了应用Ｘ荧光光谱仪，ＩＣＰ单道扫描光谱仪等检测方法开展无损检测，材料的表面薄层分析和快速半定量分析。这些工作弥补了ＰＧＳ－２电弧的摄谱法的不足，提高了定性分析的质量和适用范围。     

空气-氩气混合气冷却ICP中镁、铬、镉、锰四种元素的谱线强度和信背比的测定

本工作使用扫描等离子体光谱仪，在与小功率ＡｒＩＣＰ类似的条件下，测定了空气氩气混合气冷却ＩＣＰ中镁、铬、镉、锰谱线强度和信背比随冷却气组成及观测高度的变化，并估算了折衷条件下的检出限。结果表明对于离子线及激发电位较高的原子线，当冷却气中引入５～１０％空气后，谱线强度最大并大于ＡｒＩＣＰ中数值；对于激发电位较低的原子线，随着冷却气中空气含量的增大其谱线强度逐渐减小。谱线的信背比则与激发电位及谱线波长有关。     

稀土元素原子发射光谱及其谱线干扰的高分辨率ICP—AES研究： …

本文是系列工作的第四部分。利用光栅刻线为３６００条／ｍｍ的顺序扫描高分辨率ＩＣＰ－ＡＥＳ光谱仪研究了铕和钆分别作为基体时对其他１４个元素共６６条“首选分析线”的光谱干扰情况,获得了相应的光谱干扰轮廓和其他光谱干扰信息,为选择不同稀土基体中的稀土元素最佳分析线提供了有益的参考依据。     

ICP-AES法直接测定地热温泉水样中的钾、钠、钙、镁、硅、锂、硼的研究

采用顺序扫描式ＩＣＰ光谱仪,直接测定了地热温泉水样中的７种元素,并对最佳测试条件的选择进行了探讨,方法简便,快速、准确,检出限及精密度均可满足分析要求。     

小功率空气-氩气混合气冷却ICP中电子密度的测定

在与小功率全Ａｒ－ＩＣＰ类似的条件下,使用顺序扫描等离子体光谱,用Ｓｔａｒｋ加宽法,选择Ｈβ（４８６．１ｎｍ）谱线,测定了空气－氩气混合气冷却ＩＣＰ中在感应线圈上０、２、５、１０ｍｍ处电子密度的侧向分布并将其中部分侧向分布经Ａｂｅｌ变换为径向分布。     

纳米PIC—I／azaPIC—I混合分子聚集体光学非线性的Z—扫描研究

引入胶体ＳＰ５４，在室温下形成ＰＩＣ－Ｉ（１，１ｄｉｅｔｈｙ１－２，２－ｃｙａｎｎｉｎｅＰ－ｔｏｕｅｎｅｓｕｌ－ｆｏｎａｔｅ－Ｉｏｄｉｄｅ）／ａｚａＰＩＣ－Ｉ的Ｊ－聚集体，用Ｚ－扫描技术系统研究了室温下纳米ＰＩＣ－Ｉ／ａｚａＰＩＣ－Ｉ，有机分子聚集体三种配比下的三阶光学非线性，观测到随着延长变短，样品的三阶非线性极化率增大，我们分析和讨论了这种非线性增强的机制。     

用智能波长校正的扫描式ICP光谱仪测定铬铁矿中六种元素成分

本文利用作者所在实研究室开发的扫描式ＩＣＰ光谱仪的智能波长校正装置取代传统的ＩＣＰ光谱仪的局部恒温系统，测定了铬铁矿及铬酸盐中的Ｃｒ，Ｓｉ，Ａｌ，Ｆｅ，Ｍｎ和Ｍｇ六种元素成分。测定结果与铬矿标样的鉴定值基本一致，测量的相对标准偏差（ＲＳＤ）为１．０％，智能波和工校正装置的波长校正结果与谱线峰值描迹结果的比较表明，该智能波长校正装置是有效的，具有省时，安全，结构简单的特点，有广泛的应用的前景。     

稀土元素原子发射光谱及其谱线干扰的高分辨率ICP—AES研究

本工作利用光栅刻线数为３６００条／ｍｍ的高分辨率ＩＣＰ－ＡＥＳ光谱仪，详细研究了镝基体对其他１４个稀土元素共６６条“首选分析线”的光谱干扰情况。     

稀土元素原子发射光谱及其谱线干扰的高分辨率ICP-AES研究——Ⅲ镝基体对其他稀土元素的光谱干扰

本工作利用光栅刻线数为３６００条／ｍｍ的高分辨率ＩＣＰ－ＡＥＳ光谱仪，详细研究了镝（Ｄｙ）基体对其他１４个稀土元素共６６条“首选分析线”的光谱干扰情况     

SPEX—DM1B替代系统BD—POW的研制

我们以微机 IBM PC/AT(286)为主体,设计和制作了 BD—POW 系统以替代SPEX—DM1B 光谱仪控制运行系统的工作,BD—POW 通过通用和专用接口硬件连接微机和光谱仪,并用编制的大量软件对谱仪进行控制和光谱信号的采集与处理,经过与 SPEX—1403机试用证明,它不仅可以替代 DM1B 工作,而且具有更好的功能。     

一种配备于ESR谱仪的计算机系统

本文介绍了一种在JES-FE型ESR谱仪上进行数据采集、信号平均、并具有数据平滑、g值计算、积分、加减谱、绘图等数据处理功能的计算机系统。系统由IBM-PC微机和由时钟脉冲电路、A/D转换电路等组成的接口、电路及应用软件组成。该系统可在扫场速度1ms-128min的广泛范围内采样及信号平均。该系统大大提高了ESR谱仪在短寿命自由基测定及微弱信号检测方面的应用。其主要功能和技术指标已达到该机原配套的ES-PRIT₂3系统的水平,但价格不及其五分之一。     

Microcomputer control and data analysis for a far infrared Fourier spectrometer

A commercial general-purpose microcomputer is used to provide real-time experimental control, data acquisition and data analysis for a far infrared Fourier spectrometer. The interfacing and programming procedures are described. The microcomputer gives excellent performance at a low cost.     

Quantum cascade laser-based spectrometer for high sensitive measurements of trace gases in air

A quantum cascade(QC)laser-based spectrometer is developed to measure trace gases in air.The proposed spectrometer is tested for N2O,and the results presented in this letter.This system takes advantage of recent technology in QC lasers by utilizing intra-pulse scan spectroscopy,which allows high sensitive measurement.Without calibration gases,the gas concentration can be calculated with scan integration and the corresponding values from the HITRAN04 database.By analyzing the Allan variance,a detection limit of 2 ppb is obtained.Continuous measurement of N2O sampled from ambient air shows the applicability of the proposed system for the field measurements of gases of environmental concern.     

A frequency stabilized,cw dye laser for high resolution spectroscopy

A single frequency, jet stream cw dye laser spectrometer locked to a stable high finesse optical reference cavity is described. This system is capable of maintaining a frequency stability of ± 1 MHz/min and a continuous scan of up to 6 GHz.     

SPEX-1403拉曼光谱仪扫描控制和数据采集系统的研制

我们研制成用于 SPEX— 1 0 4 3拉曼谱仪的数据采集 /扫描控制系统。编制了运行在WINDOWS 3.1操作系统下的拉曼谱仪扫描和数据采集软件 ,由于采用了一些新方法 ,此系统不仅可以替代原有的 DM1 A,而且在功能上比原系统有所加强并易于使用     

Diagnostic system for two dimension intensity distribution of laser beam

The diagnostic system for two dimension(2-D)intensity distribution of laserbeam is a measuring instrument for many parameters of laser beam.2-D intensity distributionplot of laser beam is obtained by the two dimension scanning mirror which is controlled by amicrocomputer to scan the laser beam on a detector.Many parameters of laser beam such asthe isointensity distribution plot,the beam diameter,the beam waist diameter,the laser pow-er,the diverge angle and the beam brightness,are given by means of the microcomputer pro-cessing the data measured.Theoretical analysis of beam parameter transform is given.     

谱仪专用计算机Aspect—3000与IBM—PC微机的数据传输及处理

本文首先介绍了利用Kermit程序在谱仪专用计算机Aspect和通用微机IBM-PC之间进行数据通讯的方法,然后提供了几则应用实例。特别是在IBM-PC上配备数据处理程序后,它即可成为谱仪的卫星数据站。     

Jet-cooled infrared spectra of molecules and complexes with a cw mode-hop-free external-cavity QCL and a distributed-feedback QCL

The coupling of quantum cascade lasers (QCLs) with an off-axis cavity enhanced absorption (CEA) spectrometer and an astigmatic multiple pass absorption (MPA) spectrometer are described in this paper. A continuous wave (cw) liquid nitrogen cooled distributed-feedback QCL at 5.7 μm and a cw room temperature mode-hop-free external-cavity QCL at 6.1 μm were employed as the light source. For the CEA spectrometer, the effects of mirror size and laser scan rate were evaluated. For the MPA spectrometer, a pair of astigmatic mirrors with a 55 cm mirror distance was aligned to the 366-pass configuration. The jet-cooled samples were generated using a homemade pulsed slit jet nozzle assembly. Two LabVIEW programs were written to automate and synchronize the timing of the laser scan, the pulsed slit jet molecular expansion, and the data acquisition. Infrared spectra of jet-cooled methyl lactate and the Ar–H₂O complex and room temperature N₂O and NH₃ samples were measured using both the rapid scan and the wavelength modulation methods to evaluate the sensitivity and resolution of the CEA and MPA spectrometers. The combination of the MPA spectrometer with the external-cavity QCL using the rapid scan method was found to be the best suited combination to measure high resolution jet-cooled infrared spectra.