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A systematic investigation of high harmonic generation using mid-infrared driving laser pulses

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Science china(physics,Mechanics & Astronomy) 2010年第6期53卷 1054-1059页

作者： YAO JinPing 1,2.,XIONG Hui 1 ,XU Han 1 ,FU YuXi 1,2.,ZENG Bin 1,2.,CHU Wei 1,2.,CHENG Ya 1 ,XU ZhiZhan 1 ,LIU XiaoJun 3 & CHEN Jing 4,5 1 State Key laboratory of High Field Laser physics,Shanghai {2. of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 2.1800,china 2.Graduate University of Chinese Academy of Sciences,beijing 100049,china 3 State Key laboratory of Magnetic Resonance and Atomic and Molecular physics,Wuhan {2. of physics and mathematics,Chinese Academy of Sciences,Wuhan 430071,china 4 {12.,beijing 1.0088.china 5 Center for applied physics and Technology,Peking University,beijing 100084,china State Key laboratory of High Field Laser physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai China Graduate University of Chinese Academy of Sciences Beijing China State Key laboratory of Magnetic Resonance and Atomic and Molecular physics Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences Wuhan China institute of applied physics and computational mathematics Beijing China Center for applied physics and Technology Peking University Beijing China

We report on a systematic investigation of the influences of gas pressure,focal position and focusing geometry on high harmonic generation by use of mid-infrared femtosecond laser pulses. We also discuss the spatial characteristics of harmonics under different focusing conditions. By optimizing the parameters,we experimentally observed the generation of 1 kHz,low divergence coherent X-ray beams in the water-window region.

关键词： mid-infrared laser pulses high harmonic generation water window

INTERACTION MORAWETZ ESTIMATE AND A SIMPLIFIED PROOF ON THE ENERGY SCATTERING FOR HARTREE EQUAITONS

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Acta Mathematica Scientia 2011年第1期31卷 15-21页

作者：徐桂香范佳 institute of applied physics and computational mathematics School of mathematics and Systems Science Beihang University LIMB of the Ministry of Education

In this article, we give a simple proof on the energy scattering for the Hartree equations using the interaction Morawetz estimate that was originally introduced in [5].

关键词： Scattering theory Hartree equation wave operators asymptotic completeness

A New Interpolation Method for Two-dimensional Functions in Evaluated Nuclear Data Library

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计算物理 1992年第2期9卷 203-212页

作者： Cai Shaohui(institute of applied physics and computational mathematics,P. O. Box 8009 .beijing, {2.he People’s Republic of china) 北京应用物理和计算数学所北京

Unreasonable spectrum shape is often obtained from a simple Cartesian interpolation scheme for two - dimensional functions. A unified non - Cartesian interpolation scheme which may have no such trouble ,has been propo... 详细信息

关键词： two - dimensional tabulated function secondary energy distubution secondary angular distribution Cartesian interpolation non-Cartesian interpolation evaluated nuclear data library.

The attractor of the stochastic generalized Ginzburg-Landau equation

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Science china mathematics 2008年第5期51卷 955-964页

作者： GUO BoLing~1 WANG GuoLian~(2.) Li DongLong~3 1 institute of applied physics and computational mathematics,P.O.Box 8009,beijing {2.china 2.The Graduate School of china Academy of Engineering physics,P.O.Box 2.01,beijing {2.china 3 Department of Information and Computer Science,Guangxi University of Technology,Liuzhou 545006,china institute of applied physics and computational mathematics Beijing China The Graduate School of china Academy of Engineering physics Beijing China Department of Information and Computer Science Guangxi University of Technology Liuzhou China

The stochastic generalized Ginzburg-Landau equation with additive noise can be solved pathwise and the unique solution generates a random system. Then we prove the random system possesses a global random attractor in ... 详细信息

关键词： generalized Ginzburg-Landau equation random dynamical systems random attractor 35K05

Void damage model and service life prediction for solid high polymer

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Chinese Science Bulletin 2001年第21期46卷 1842-1845页

作者： SHEN TingfangDepartment of applied physics, {2. institute of Technology, {2. 100081, china Department of applied physics Beijing Institute of Technology Beijing China

Based on the analysis of three void damage variety models, this note presents (i) a method that regards the void content as a damage variation of the grain and (ii) a geometric model for micro-unit of void damage. Equations of the void damage variety containing void content are analyzed. This work is focused on the measurement of internal damage level and the damage variety estimation is directly related to the life predication in the practical engineering applications. Nowadays, the critical service life of the solid grain/polymers is usually presumed at domestic and international level. The strength or strain reduction of 2.% or the stabilizer consumption of 50% is generally regarded as a critical storage life of the solid grain/polymers, and the service life is predicted by the extrapolation method on An-henius formula. The applications, however, show that the above method is unreliable and has significant errors. With the aid of the discontiguous automatic measuring device of real time volume

关键词： void content void damage thermal aging service life damage mechanics.

Regularity criterion to some liquid crystal models and the Landau-Lifshitz equations in R^3

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Science china mathematics 2008年第10期51卷 1787-1797页

作者： FAN JiShan1 & GUO BoLing2.1 College of Information Science and Technology, Nanjing Forestry University, Nanjing 2.0037, china 2.institute of applied physics and computational mathematics, P. O. Box 8009, {2. College of Information Science and Technology Nanjing Forestry University Nanjing China institute of applied physics and computational mathematics Beijing China

We consider the regularity problem under the critical condition to some liquid crystal models and the Landau-Lifshitz equations. The Serrin type reularity criteria are obtained in the terms of the Besov spaces.

关键词： liquid crystal Landau-Lifshitz equations critical condition Besov space

Homoclinic orbits for a perturbed quintic-cubic nonlinear Schrdinger equation

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Communications in Nonlinear Science and Numerical Simulation 2001年第4期 227-230页

作者： Boling GUO and Hanlin CHEN institute of applied physics and computational mathematics, beijing 1.0088. china Mianyang Normal College, Mianyang 62.000, {2.

The existence of homoclinic orbits for a perturbed cubic-quintic nonlinear Schr?dinger equation with even periodic boundary conditions under the generalized parameters conditions is established. We combined geometric singular perturbation theory, Melnikov analysis, and integrable theory to prove the persistence of homocliuic orbits.

关键词： perturbation homoclinic orbits invariant manifold persistence

由基模群聚产生的相干谐波的功率减少和电子束质量

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物理学报 1996年第2期45卷 201-204页

作者：丁武北京应用物理与计算数学研究所北京100088

解析地研究了电子束的热效应对由基模群聚电子束产生的相干谐波功率的影响,并与外源预群聚电子束产生相干谐波的机制进行了比较.

关键词：基模群聚自由电子激光相干谐波电子束质量

Kinetic simulation study of one dimensional collisional bounded plasma

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Nuclear Science and Techniques 1999年第3期10卷 155-164页

作者： ZHU Shaoping (institute of applied physics and computational mathematics, beijing {2. 北京应用物理和计算数学所北京 100088

A self-consistent kinetic simulation study of one dimensional collisional bounded plasma is presented. The formation of stable sheath potential is *** is found that mass ratio of electron and ion not only affects the level of sheath potential, but also affects the ion temperature of system. It is clarified that the effects of secondary emission electron on both the total potential drop and the temperature are not important.

关键词：等离子体等离子体屏蔽运动模拟