Iterative solutions for low lying excited states of a class of SchrSdinger equation

The convergent iterative procedure for solving the groundstate Schr?dinger equation is extended to derive the excitation energy and the wavefunction of the low-lying excited states. The method is applied to the one-dimensional quartic potential problem. The results show that the iterative solution converges rapidly when the coupling g is not too small.     

1980年7月—12月原子光谱文献分类索引

一一f一一一一一一一了文献题录8134一8590的分类索引。按应用分类和按元素字母顺序分类。 应用分类索引农业植物一8169(Pb),5216又AI),521了,5236(As, Sb),8285,8286(Ca.K,Mg,P),829组(AI, Ba,Be,Ca,Cd,Cr,Cu,Fe,Mn,P,pb,Sr, Zn),8310,8391(Ag,AI,Ba,Co,Cr,Cu, Fe,Mg,Mn一Mo,Ni,51,Sn,Sr,Ti,V, Zn),8396(CI),8406(Ge),8419(Sb), 8482(K),8516,8554,5573(Cd,Co,Cr, Cu,Ni,孙,Zn),8579(Cd)土壤一8151(Pb),8155(AI,Fe),8233(Mn), 8255(Ca,K,Mg,P),8266(Hg),8271(Cd, Pb),8274(Cu,Fe,Mn,Zn),8296(Ca,K, Mg,P),830…     

Enhanced Raman Scattering by Quasi-phase-matched Processes in ax^（2） Photonic Crystal

An intense comb-shaped Raman spectra were obtained from a two-dimensional nonlinear x（2） photonic crystal - a hexagonally poled LiTaO3 crystal with lattice parameter 9 micros. The lowest Raman shift was down to 2 cm^-1 and the order of anti-stokes and stokes signals both achieved 11. The novel Raman spectra were mediated first by intense phonon-polariton fields, which were driven through the quasi-phase-matched coupling between the incident dual-beam both from an optical parametric oscillation laser, and further amplified greatly also by such quasi-phasematched nonlinear optical process. The dependence of the Raman spectra character on the wavelength and intensity of incident beams were studied in detail, which accordingly revealed information of the inelastic scattering and the elementary excitation in the nonlinear medium. These results on the other hand suggest technological importance for developing a novel Raman laser with the multi-wavelength output and a tunable frequency interval and for possible applications in quantum optics.     

网络Q&A

Q 我在网上看见一张很好看的图片,想保存下来,可是右键不管用了,还弹出一个窗口说些不能怎样怎样的话,这是怎么回事?我怎样才能得到这些图片? A 其实这只是网页编写者利用JAVA语言实现的一个很简单的锁住鼠标右键的功能,这招能唬住一批只是简单上网浏览的用户,对于老网虫来说,破解方法也很简单。按以下的步骤做,就能得到你想要的图片了。 1、在浏览页面上按下鼠标右键,这时会弹出一警告窗口,注意千万不要松开右键。     

Microstructure and Texture Changes of Tungsten-Rhenium coated on Carbon Fiber Composite during Annealing

Since tungsten was chose as the divertor tiles of 1TER, the investigation of tungsten and its coating as plasma facing material (PFM) have been paid more attentions by fusion scientists all over the world. Recent years, tungsten coatings have been successfully     

应用于雷达和通信中的砷化镓低噪声单片微波集成放大器

<正> 一、引言单片微波集成电路已不再是实验室的奇迹了,它已在世界各公司开发并投入试制性的生产。把模拟功能集成在小块 GaAs 单片上的好处是子系统的尺寸可减小到 1/10,部件成本和装配次数大大减少,并且实现了比混合电路更复杂的功能。已经用增强型技术在高速、低功耗 GaAs 数字电路方面做了大量的工作。到目前为止,模拟单片集成电路已经广泛地应用在先进的相控阵雷达中,为了使这种系统获得成功,必须满足在成本、可靠性、重复性和性能诸方面的要求。目前,正在考虑把相控     

声表面波对GaAs(110)量子阱发光特性的调制

结合声表面波和光致发光谱在低温(15K)下对非故意掺杂的GaAs(110)量子阱结构的发光特性进行了研究.实验结果表明，由于声表面波的作用GaAs(110)量子阱的发光强度减弱,并且其对应的重空穴能级出现了分裂的现象，当施加的声波强度P_rf达到20dBm时，能级分裂ΔE达到了10meV.进一步讨论了声表面波对GaAs(110)量子阱圆偏振光自旋注入的影响. 关键词： 发光 GaAs量子阱 声表面波 自旋极化     

关于一类单叶函数

A sharp coefficient estimate,distortion theorem and the radius of convexityare determined for the class R(α,β,A,B) of function f(z)=z+(?)a_nzⁿ satisfyingthe condition |(f′(z)-1)/(Bf′(z)-[B+(A-B)(1-α)])|<β for some α,β(0≤α<1,0<β≤1) and -1≤A相似文献   

12-Ring Network Coordination Polymer——{[Cu(C_4N_2H_(10))_4]_2·H_4V_4O_(14)}_n Formed by Linking cyclo-[H_4V_4O_(14)]~(4-) with Cu(C_4N_2H_(10))~(2+)_4 Cation Clusters

IntroductionThe interest in polyoxometalates that are widelyused in medical chemistry, catalyst reactions, and ma-terial sciences stems from their complicated aggregatesformed by means of corner-, edge- and face-sha-ring[1—4]. The exploitation of new str…     

INERTIAL MANIFOLDS FOR NONAUTONOMOUS SEMILINEAR PARABOLIC PARTIAL DIFFERENTIAL EQUATIONS WITH TIME DELAYS

The present paper deals with the long-time behavior of a class of nonautonomous retarded semilinear parabolic differential equations. When the time delays are small enough and the spectral gap conditions hold, the inertial manifolds of the nonautonomous retard parabolic equations are constructed by using the Lyapunov-Perron method.