散射

SBS partial phase-conjugate compensating phenomenon has been researched experimentally.The difference between single-transverse-mode laser SBS and wave-front-distorted laser SBS were analyzed illustratively.

通过实验观察了受激布里渊散射相位共轭波前补偿现象，分析了单横模激光、波前弱畸变及强畸变激光受激布里渊散射现象的差异。

Elastic and inelastic differential and integral cross sections for low-energy vibrational excitation of H2 by electron impact are studied with exact exchange. The resulting coupled integrodifferential equations are solved using a combination of linear-algebraic and R-matrix-propagator techniques.

严格交换势用于研究低能电子与H2分子的弹性和非弹性散射截面，线性代数方法和R-矩阵传播子相结合求解基于振动密耦合方法的积分-微分耦合方程组，由此得到收敛的散射微分截面和积分截面。

The results show that the radiative properties of randomly distributed soot aggregates for a given fractal dimension are complex functions of the monomer diameters, the number of monomers in the aggregates,and the refractive index; For a small value of the monomer diameters, the absorption cross section of soot aggregates tends to be relatively constant when the fractal dimension is small but increases rapidly when the fractal dimension exceeds two. However, a monotonical reduction in light absorption with the increase of the fractal dimension is observed for soot aggregates with sufficiently large monomer diameters, number of monomers,and refractive index. The scattering cross section , extinction cross section and single-scattering albedo increase monotonically with the increase of the fractal dimension. Overall, the results for soot aggregates differ profoundly from those calculated for the equivalent spherical particles, and the discrepancies between them will change small with the increase of the fractal dimension.

研究表明，在给定分形维数的情况下，烟尘団簇粒子的辐射特性取决于原始微粒粒径、数量及复折射率；原始微粒较小的団簇粒子，当分形维数较小时，吸收截面变化不明显，但当分形维数大于二时，吸收截面骤然增大，然而，对于具有比较大的原始微粒粒径、数量及复折射率的烟尘団簇粒子，吸收截面随着分形维数的增大而单调递减；随着分形维数的增大，団簇粒子的散射截面、消光截面及单次散射反照率均单调递增；从整体上来讲，団簇粒子的辐射特性与等效球形粒子的辐射特性存在着比较大的差别，并且这种差别随着分形维数的增大而减小。

With this advanced radiative transfer model, we simulate the multispectral, multiangular reflected solar radiance measured by the future satellite.

1在分析不同散射角反演核函数的基础上，发现了一个卫星可以观测得到的20～30°小散射角区域。

The multiresolution time-domain algorithm based on the scaling function of the Daubechies wavelet is introduced, and the perfectly matched layer absorbing boundary condition for the algorithm is deduced. In order to overcome the difficulties due to the nonlocalized property of the MRTD basis functions, the pure scattered-field formulation is adopted. The method presented is applied to the scattering analysis of multiple conducting objects, and the numerical results are compared with those by the traditional finite-difference time-domain method. It is shown that the computational resource is reduced drastically without sacrificing much accuracy.

对基于Daubechies小波尺度函数的时域多分辨分析算法进行了详细论述，推导了MRTD算法的完全匹配层吸收边界条件，为克服传统MRTD方法中基函数存在着非局部性的缺点，在源的加入上采用了纯散射场方法；并应用该算法对多目标的电磁散射特性进行了分析，数值结果表明，MRTD算法与传统的时域有限差分法结果相吻合，大大节约了计算资源。

Calculations show that:nonreaction is the major process at low collision energy;vibrational excitation facilitates reaction;the inelastic nonreactive cross section is about three times larger than reaction cross section under 10-4eV collision energy.

计算结果表明：在低碰撞能下，散射主要以非反应过程为主；振动激发有利于反应的进行；在小于10-4eV碰撞能下，非反应非弹性散射截面和反应截面的比值约为3。

They are compound nucleus statistical process and two nonstatistical process ,i.

所考虑的反应机制有复合核统计过程和复合核弹性散射道中的辐射俘获及形状弹性散射道中的直接-半直接辐射俘获两种非统计过程。

The effect of H2SO4, phosphomolybdic acid, antimony potassium tartrate and nanogold in size of 15, 30 and 50 nm on the decreased RS intensity I was studied respectively.

在硫酸介质中，纳米金在774 nm处产生一个较强的共振散射峰；磷钼酸与酒石酸锑钾形成的三元杂多酸可被抗坏血酸还原形成锑磷钼蓝，导致774nm处共振散射峰的强度降低。

Low energy electron scattering ; Monte Carlo method ; polybasic medium ; mean cross section.

低能电子散射； Monte Carlo方法；多元介质；平均散射截面

After a great deal of computation, the Mie phase functions of the single particle or polydisperse particles are given here in numerical expression.

通过大量数值计算详细分析了该影响并给出了单散射体、集群散射体的Mie相函数的数值计算结果。

The X-ray diffract was used to analyze the crystal structure of the composite. Results show that after the talc was treated with blend coupling agent, the crystal structure of talc changed, and effect Intercalation phenomenon.

通过X射线衍射分析可知，用混合偶联剂对滑石粉进行预处理后，滑石粉晶体结构发生改变，产生了插层现象，使PP／滑石粉复合材料为纳米复合材料。

An authentic Maui wedding might require the services of a 'kahu', which is a Hawaiian minister.

毛伊可能需要一个真实婚礼服务'kahu'，这是夏威夷部长。