A Novel Crystal Spectrometer in Laser Produced Plasma Diagnostic Experiments

ＡＮｏｖｅｌＣｒｙｓｔａｌＳｐｅｃｔｒｏｍｅｔｅｒｉｎＬａｓｅｒＰｒｏｄｕｃｅｄＰｌａｓｍａＤｉａｇｎｏｓｔｉｃＥｘｐｅｒｉｍｅｎｔｓ￥ＳＯＮＧＸｉａｎｇｙａｎｇ；ＨＡＮＳｈｅｎｓｈｅｎｇ；ＦＥＮＧＸｉａｎｐｉｎｇ；ＺＨＡＮＧＺｈｅｎｑｕａｎ；ＸＵＺ...     

Self-Q-switched diode-end-pumped Nd: BGO laser

Ｓｅｌｆ－Ｑ－ｓｗｉｔｃｈｅｄ ｄｉｏｄｅ－ｅｎｄ－ｐｕｍｐｅｄ Ｎｄ：ＢＧＯ ｌａｓｅｒ￥ＨＵＷｅｎｔａｏ；ＺＨＯＵＦｕｚｈｅｎｇ；ＦＡＮＤｉａｎｙｕａｎ；ＪＩＡＮＧＺｈｏｎｇｈｏｎｇ（ＳｈａｎｇｈａｉｉｎｓｔｉｔｕｆｅｏｆＯｐｔｉｃｓａｎｄＦｉｎ...     

Diode-Pumped Monolithic Nd:LMA Laser

Ｄｉｏｄｅ－ＰｕｍｐｅｄＭｏｎｏｌｉｔｈｉｃＮｄ：ＬＭＡＬａｓｅｒ￥ＬＵＪｉａｎｇ；ＨＵＡＮＧＺｈａｏｍｉｎｇ；ＪＩＮＺｈｅｎｈｏｎｇ；ＷＡＮＧＹａｎｇｊｕｎ（ＯｐｔｉｃａｌＦｉｂｅｒＩｎｓｔｉｔｕｔｅ，，ＳｈａｎｇｈａｉＵｎｉｖｅｒｓｉｔｙｏｆＳｃ...     

Femtosecond soliton generation induced by intrapulse stimulated Raman scattering in optical fibers

ＦｅｍｔｏｓｅｃｏｎｄｓｏｌｉｔｏｎｇｅｎｅｒａｔｉｏｎｉｎｄｕｃｅｄｂｙｉｎｔｒａｐｕｌｓｅｓｔｉｍｕｌａｔｅｄＲａｍａｎｓｃａｔｔｅｒｉｎｇｉｎｏｐｔｉｃａｌｆｉｂｅｒｓＣＡＯＷｅｎｈｕａ；ＬＩＡＯＣｈａｎｇｊｕｎ；ＧＵＯＱｉ；ＺＨＡＮＧＹｏｕ；...     

A Quenched Dye Laser Pumped by a KrF Excimer Laser

ＡＱｕｅｎｃｈｅｄＤｙｅＬａｓｅｒＰｕｍｐｅｄｂｙａＫｒＦＥｘｃｉｍｅｒＬａｓｅｒ￥ＸＵＥＳｈａｏｌｉｎ；ＬＯＵＱｉｈｏｎｇ；ＨＵＡＮＧＨｕｉｊｉｅ；ＤＵＬｏｎｇｌｏｎｇ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃｓａｎｄＦｉｎｅＭｅｃｈａｎｉ...     

Soliton Transmission Using Actively Mode－locked Fiber Ring Laser at 2．5GHz and 5GHz

ＳｏｌｉｔｏｎＴｒａｎｓｍｉｓｓｉｏｎＵｓｉｎｇＡｃｔｉｖｅｌｙＭｏｄｅ－ｌｏｃｋｅｄＦｉｂｅｒＲｉｎｇＬａｓｅｒａｔ２．５ＧＨｚａｎｄ５ＧＨｚ￥ＺＨＯＮＧＳｈａｎ；ＬＯＵＣａｉｙｕｎ；ＬＩＵＪｕｎ；ＧＡＯＹｉｚｈｉ；ＺＨＯＵＢｉｎｇｋｕｎ（Ｄｅｐｔ...     

Two－Side Electron Beam Pumping System For Hundred－Joule－Level KrF Excimer Laser

Ｔｗｏ－ＳｉｄｅＥｌｅｃｔｒｏｎＢｅａｍＰｕｍｐｉｎｇＳｙｓｔｅｍＦｏｒＨｕｎｄｒｅｄ－Ｊｏｕｌｅ－ＬｅｖｅｌＫｒＦＥｘｃｉｍｅｒＬａｓｅｒ￥ＭＡＷｅｉｙｉ；ＳＨＡＮＹｕｓｈｅｎｇ；ＺＨＯＵＫｕｎｇｏｎｇ；ＷＡＮＧＹｏｕｔｉａｎ；ＺＨＡＮＧＤｏｎｇ；...     

Novel Scheme for Narrow Band Fiber Filter System

ＮｏｖｅｌＳｃｈｅｍｅｆｏｒＮａｒｒｏｗＢａｎｄＦｉｂｅｒＦｉｌｔｅｒＳｙｓｔｅｍＺＨＡＯＹｕｃｈｅｎｇ；ＪＩＡＮＳｈｕｉｓｈｅｎｇ；ＷＡＮＧＷｅｉ；ＴＩＡＮＷｅｎｑｉａｎｇ（ＮｏｒｔｈｅｒｎＪｉａｏｔｏｎｇＵｎｖｉｖｅｒｓｉｔｙ，Ｉｎｓｔｉｔｕｔｅ...     

Upconversion Fluorescence of Er_2O_3 Doped BaF_2-TeO_2 and PbF_1-TeO_2 Oxyhalide Tellurite Glasses

ＵｐｃｏｎｖｅｒｓｉｏｎＦｌｕｏｒｅｓｃｅｎｃｅｏｆＥｒ_２Ｏ_３ＤｏｐｅｄＢａＦ_２－ＴｅＯ_２ａｎｄＰｂＦ_１－ＴｅＯ_２ＯｘｙｈａｌｉｄｅＴｅｌｌｕｒｉｔｅＧｌａｓｓｅｓ￥ＨＵＬｉｎ；ＪＩＡＮＧＺｈｏｎｇｈｏｎｇ；ＨＵＷｅｎｔａｏ；ＳＯＮＧＸｉｕｙｕ...     

Self-programming Optical Logic Processor by using the PROM Device

Ｓｅｌｆ－ｐｒｏｇｒａｍｍｉｎｇＯｐｔｉｃａｌＬｏｇｉｃＰｒｏｃｅｓｓｏｒｂｙｕｓｉｎｇｔｈｅＰＲＯＭＤｅｖｉｃｅ￥ＷＡＮＧＢｉｎｑｕａｎ；ＬＩＵＬｉｒｅｎ；ＰＥＮＧＨａｉｆｅｎｇ；ＬＩＡＮＧＦｅｎｇ（ＩｎｆｏｒｍａｔｉｏｎＯｐｔｉｃｓＬａｂｏｒａｔ...     

Proton stopping cross sections of liquid water

The proton stopping cross section of liquid water for the energy range from 40 keV to 10 MeV is calculated by applying the modified local-plasma model and employing a simple model of liquid water. The calculated stopping cross section of liquid water is about 5.6% to 14% lower than the calculated vapor-state results for the range of 80 to 500 keV and is about 8.5% to 13.4% lower than measured vapor-state results. The present results agree well with the measurements for ice crystals. The mechanism of this physical-state effect is also presented.     

一种计算氩等离子物态方程的简单模型

将Thomas-Feimi统计模型电离势的数值结果进行函数逼近，给出一个便于近似数值求解的解析表达式和计算电离度的近似计算方法，计算了Ar元素LTE情况下的电离度和物态方程，结果与Saha模型的计算结果和实验结果符合较好.所提出的简单模型也适用于计算混合物物态方程，可以在电磁发射技术领域中的强电离等离子体中有广阔的应用前景. 关键词： 等离子体 物态方程 电离势 电离度     

Thermophysical properties of stable and metastable liquid copper and nickel by molecular dynamics simulation

Molecular dynamics simulation combined with an embedded atom method (EAM) potential was applied to the calculation of the specific heat and the diffusion coefficient for superheated and undercooled liquid copper and nickel as functions of temperature. The system contains 108,000 atoms. The calculated results show that the enthalpy increases linearly with the rise of temperature. There are no breaks at their melting temperatures of 1356 and 1726 K. It is found that the calculated specific heats of Cu and Ni are 32.75 and 36.11 J/mol/K respectively. The calculated mean square displacements increase linearly with calculated time. The diffusion coefficients are exponentially dependent on temperature. Moreover, the calculated results are in good agreement with the reported experimental results for the specific heat and diffusion coefficient.     

γ射线探测器响应函数的JMCT模拟计算

采用自主研发的JMCT软件,模拟计算了射线在NaI闪烁探测器中的响应函数。JMCT模拟计算了探测过程中所有的、完整的光子-电子耦合输运过程。其模拟计算的射线能量沉积谱、探测器响应函数,与MCNP的计算结果符合得非常好,与Berger解析法计算的结果也基本符合,表明JMCT软件可以在探测器响应函数方面得到满意的结果,JMCT将在实验核物理、核分析技术应用等方面发挥越来越重要的作用。     

钬铝石榴石晶场参数调整

利用比热实验值,对钬铝石榴石（Ho3Al5O12）晶体的晶场参数进行了调整,依此计算了Ho3Al5O12晶体的晶场能谱、Zeeman劈裂能级和波函数. 在外磁场H=0时,分别计算了Ho3Al5O12晶体的总比热、总熵随温度的变化,以及外磁场H=10kOe时该晶体倒数磁化率的温度关系,理论计算结果均与已有实验数据符合较好.该工作为进一步探究该晶体的其它性质奠定了必要的理论基础,对实际生产和科学研究中磁制冷材料的优化选取也具有一定的现实意义.     

Calculations of anharmonic phonon relaxation times

Anharmonic phonon relaxation times in Ge are calculated using (i) an isotropic continuum model, and (ii) a dispersive model. A complete spectrum of calculated results is presented. Frequency-averaged values for normal- and umklapp-three-phonon relaxation times are also calculated. A comparison is made between our findings and some earlier works, and disagreements are discussed. The results are applied in calculating some results in the theory of lattice thermal conductivity. From February 1976: Department of Theoretical Physics, The University, Newcastle-Upon-Tyne, NE1 7RU U.K.     

Initial-state nuclear effects in proton-nucleus collisions

Two important initial-state nuclear effects in hadron-nucleus collisions are considered. The ratios of inclusive differential cross-sections for Drell-Yan dimuon production are calculated. The calculated results are compared to the E866 data. It is shown that the consideration of multiple soft rescatterings of incident quarks in nuclei and initial-state quark energy loss effects allow to get a good agreement between the calculated results and the experimental data.     

Ground State Properties of Superheavy Nuclei in Macroscopic-Microscopic Model

The ground state properties of superheavy nuclei are systematically calculated by the macroscopic-microscopic (MM) model with the Nilsson potential. The calculations well produced the ground state binding energies, α-decay energies, and half lives of superheavy nuclei. The calculated results are systematically compared with available experimental data. The calculated results are also compared with theoretical results from other MM models and from relativistic mean-field model. The calculations and comparisons show that the MM model is reliable in superheavy region and that the MM model results are not very sensitive to the choice of microscopic single-particle potential.     

TATB生成焓的量子力学计算

采用Hartree-Fock方法和密度泛函 BPW91方法,对TATB分子的几何结构进行了优化,计算了其电子能量和热运动的能量.计算并讨论了TATB的生成焓.结果表明,TATB分子中的苯环离域电子结构引起TATB生成焓计算的较大的系统偏差;利用具有相似离域电子结构的苯和NO的生成焓进行修正,计算得到的TATB生成热与实验结果符合较好.?     

轴流式喷水推进器泵级内部流场的数值计算

采用数值计算的方法,研究了轴流喷水推进器泵级模型的内部三维紊流流场和性能。计算针对泵级的进口到喷水推进器的出口进行,包括进水区域、叶轮、导流壳区域的泵级整个流道。采用结构网格对计算区域进行剖分,应用NUMECA软件对控制方程进行求解。选用Spalart-Allmaras一方程紊流模型,使用时间推进法计算流场中的流动参数。并根据流场计算结果对泵级的流量-扬程特性和流量-效率特性进行了预测。计算与实验结果对比表明,二者取得了较好的一致,说明采用的计算方法具有较好的可信性及较高的计算精度。根据流场计算结果,对泵级的性能进行了分析。