用月牙形波带求圆孔夫琅禾费一级衍射环的角半径

用类似菲涅耳半波带的简单几何分析方法，近似导得了圆孔夫琅禾费衍射的中央明斑和一级明环的角半径。     

A theoretical analysis of angular deformation and local stresses in spherical vessels

In this paper several geometrical relations of angular deformation and the analytical expressions of local stresses in spherical vessels are established with the analytical method. A concise and practical formula for calculating the stress concentration coefficient is derived, which shows that the stress concentration is related to angular deformation and increases with an increases of the square root of the ratio of radius to thickness.     

Theoretical Treatment of Electric and Magnetic Multipole Radiation Near a Planar Dielectric Surface Based on Angular Spectrum Representation of Vector Field

We have developed an analytic treatment of light emission properties of electric and magnetic multipoles near a planar dielectric surface, using angular spectrum representation of vector spherical waves. The results are described in terms of spatial rotation matrix elements, so that the angular distribution of light emission for higher order multipoles is easily obtained, which enables us to evaluate basic optical near-field problems such as electric dipole radiation with arbitrary orientation with respect both to surface and observation direction. The numerical results are in good agreement with our previous experimental results and the numerical results reported by Lukosz.     

Polaritons in confined systems

Polaritons in confined systems are introduced and their dispersion is calculated. The amount of squeezing of confined excitons-polaritons in GaAs quantum wells is evaluated.     

分子角动量定位和定向布居的制备与探测

利用线偏振和园偏振激光受激拉曼抽运技术，选择性地制备了C2H2线性分子电子基中红外非激活振动模v″2=1的单一转动态J″（X^1∑^ g,v″＝1，J″）的角动量定向布居和定位布居。并从线偏振及园偏振紫外激光光诱导的A^1*Au(v′3＝1）←X^1∑^ g(v″2＝1）的电子跃迁荧光光谱中，直接测定了C2H2（X^1∑^ g，v″=1，J″＝4、7、8、9、10、11、12、13）的角动量定向布居值A^(1)O为0．7－0．8之间，对于J″=2、3、4、5、6、7、8、9、11的角动量定位布居值A^(2)0为－0．7－－0．9。这一结果表明，人们可用于上述激光抽动技术可控制C2H2分子在反应前的角动量空间布居。     

Influence of giant angular resonances on the electromagnetic characteristics of low-lying states

The two-rotor model0 with the Feshbach projection operator method is applied for investigating the properties of the positive parity low-lying collective states in the rare earth nuclei. The calculations of the energy spectra, E2-transition probability and magnetic properties of the states of β- and γ-bands are carried out for the isotopes ^{164, 166, 168}Er. The B(M1) values from 1⁺ states to the ground band are estimated.     

30MeV/u 40Ar+159Tb反应中前角区复杂碎片的来源

在前角测量了30MeV/u ⁴⁰Ar+¹⁵⁹Tb反应中两裂片符合下的轻粒子和复杂碎片,利用线性动量转移和总横向动量方法对三体符合事件进行了碰撞参数分类. 实验结果表明,在中心碰撞中复杂碎片主要来自于平衡类靶核的统计发射,并伴随有非平衡中途成份;而周边碰撞中前角区复杂碎片主要来自于弹核碎裂成份. 在半中心碰撞中则存在类弹、类靶和中途三种成份.     

矩形波导谐振腔耦合损失的角谱分析法

在频域用角谱理论分析了矩形波导激光器谐振腔的耦合系数，计算了矩形波导中ＥＨ１１模的耦合系数，本文的方法可以推广用于对其它模的分析。     

The High-order Squeezing of Orthonormalization Eigenstates of a~4

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Composition operators on weighted Dirichlet spaces

We characterize bounded and compact composition operators on weighted Dirichlet spaces. The method involves integral averages of the determining function for the operator, and the connection between composition operators on Dirichlet spaces and Toeplitz operators on Bergman spaces. We also present several examples and counter-examples that point out the borderlines of the result and its connections to other themes.