量子线/绝缘层/p波超导体结的隧道谱

用Bogoliubov-de Gennes方程来研究量子线/绝缘层/p波超导体结(q/I/p)中的准粒子输运过程，利用推广的Blonder，Tinkham和Klapwijk模型计算绝对零度和有限温度下q/I/p的一级谐波隧道谱.和量子线/绝缘层/d波超导体结的一级谐波隧道谱不同的是q/I/p的一级谐波隧道谱中存在零偏压电导峰.随着q/I/p中绝缘层的势垒散射增强，q/I/p的一级谐波隧道谱中零偏压电导峰变高.     

355nm激光曝光SU-8胶的XPS谱和FT-IR谱研究

SU-8光胶因具有良好的光刻性能,并可获得稳定的高深宽比而在微加工领域得到了广泛的应用。众多研究采用不同的光源对其进行了多种光刻研究,本文应用355nm激光对SU-8胶进行曝光,分别采用XPS谱和FT-IR谱分析了SU-8胶与激光相互作用过程中,355nm激光对SU-8胶的作用以及反应前后主要成分含量、分子结构的变化,初步探讨了SU-8胶中激光曝光能量与透入深度的关系。     

Darboux Transformation with a Double Spectral Parameter for the Myrzakulov-I Equation

The Myrzakulov-I equation is a 2＋l-dimensional generalization of the Heisenberg ferromagnetic equa- tion and has a non-isospectral Lax pair. The ex- plicit solutions to the Myrzakulov-I equation have been discussed by many researchers. Darboux transformation is one of the useful methods to ob- tain explicit solutions to the nonlinear partial differ- ential equation. The Darboux transformation of de- gree 1 for this equation has been constructed and exact global ＇one-soliton＇ solutions are derived.     

Research on calibration method in lab of direct solar channels of Sun photometer

We develop a new calibration method in lab by measuring the absolute spectral irradiance responsivity of Sun photometer sun channel. The absolute power responsivity of Sun photometer is obtained when a white laser double monochromator system serve as a source, and a standard transfer detector calibrated against cryogenic absolute radiometer is assembled to measure the absolute power of laser beam. The effective area of aperture is measured through laser raster scanning method, and the relative spectral irradiance responsivity of the corresponding channel is obtained by using tungsten-halogen lamps double monoehromator system. On the basis of the above results, the top of the atmosphere responsive constants V0 （500, 675, and 870 nm） are obtained by integration with extraterrestrial solar spectral irradiance data. Comparing the calibration results with that of CIMEL, France in November 2011, the relative differences are 4.38%, 2.23%, and 2.45%, respectively. The calibration uncertainty reaches to 2.048×10^-2, which shows a remarkable consistency with the Langley plot method. Further, our scheme can overcome the limits of space and atmospheric conditions which are only available at a high-altitude calibration site in particular date. The advantages lie in not only shortening the experiment period but also being of high precision. This new scheme definitely plays an important role in supporting the current and future sun photometry calibration activities which are significant to earth observation.     

基于能谱滤波分离的多谱计算机层析成像方法

随着科技的发展,适用于结构分析的传统单能X射线计算机层析(CT)成像技术,已不能满足现代工业对物质组分区分与鉴定的功能成像需求。这是由于在X射线CT系统中,现有重建算法的单能假设与CT投影的多谱性不一致,导致CT重建质量差,无法组分区分。基于光子计数探测器的能谱分离成像思想,提出了基于能谱滤波分离的多谱CT成像方法,该方法通过在X射线发射端加滤波片的方式,实现能谱滤波分离,并通过变能量成像,获得近似单能的递变能量投影序列;针对滤波后噪声水平较高问题,利用EM-TV重建算法,实现了多谱CT成像,可满足组分区分的需求。仿真实验结果表明,对于密度相近的检测对象,该方法可以满足组分区分的要求。     

64通道一维位置灵敏电流分布探测器及其数据获取系统

针对高流强粒子束与绝缘毛细管相互作用的特点, 设计制作了一套64通道一维位置灵敏电流分布探测器及其配套的数据获取系统, 该探测器可分辨最小直径为1 mm的束斑, 通过数据获取系统可实现可视化自动数据采集。 用2 nA和200—2000 eV电子对探测器进行了定标, 并用10 μA和2000 eV的电子束穿越锥形毛细管后的出射电子, 对探测器及数据获取系统进行测试, 获得了出射粒子的位置分布谱及能量信息。 A 64 channel position sensitive current distribution detector with 1 mm position resolution was developed, while the data acquisition system is based on the LabVIEW software. The test result obtained by using a 2 nA, 200—2000 eV electron beam deflecting by different voltages and the position spectra of 10 μA, 2000 eV electrons transmitted through a glass capillary was measured. The result indicated that the detector can be used to detect the charged particles with strong beam current through the capillary.     

响应曲面法提取水松总黄酮的工艺研究

采用响应曲面法,优化了提取水松总黄酮的提取工艺条件为:微波时间3.8min,乙醇浓度69%,固液比1∶31,在此条件下,水松总黄酮的产率为1.88%。     

氮气在100 eV以下的绝对振子强度密度

在入射电子能量为2500 eV、能量分辨为100 meV的条件下，得到了氮气在100 eV以下的绝对光学振子强度密度和广义振子强度密度；得到了23 eV和31.4 eV两个超激发态的绝对广义振子强度、并讨论了它们的动量转移依赖特性。     

MPCVD金刚石膜装置中 Ar的光谱特性分析

在MPCVD装置中,通过调节微波功率、气体流量及反应压强,使用高分辨率的多道光学分析仪采集得到Ar的400～440 nm光谱,利用玻耳兹曼"斜率法"得到Ar激发温度Texc. 结果显示:随气体流量增加Texc降低;随着微波功率的增加Texc升高;谱线强度随着功率的增加而上升,在550 W及700 W处开始降低继而又上升,此点是制备金刚石膜的功率关键点.     

激光感生色散光学滤波理论

利用半经典理论，建立了激光感生色散光学滤波的理论模型.通过求解密度矩阵方程，得到 感生极化率.并利用该理论计算出钾694 nm激光感生色散光学滤波器的透射谱，与发表的实 验结果基本符合. 关键词： 激光感生色散光学滤波 透射谱 极化率