反散射

结果在低能区，2cm厚有机玻璃板的反散射特性，以及在高能区水模体的反散射特性更接近人体。

Results In the lower energy region , the backscatter property of PMMA is close to that of human body , and in the higher energy region the backscatter property of water is close to that of human body .

电离辐射反散射土壤密度计

Ionizing radiation backscatter soil density meter

如何减弱~（137）CS能谱中的反散射峰

How to Weaken Back & Scattering Peak in ~ ( 137 ) Cs energy Spectrum

用低能X射线反散射法测定泥炭的灰分含量

Determination of the content of ash in peat by using low energy X-ray backscattering method

MonteCarlo模拟对放疗中电子反散射谱的研究

Investigation of spectral characteristics of electron backscattering effect in radiotherapy with Monte Carlo code

目的确定在医用诊断X射线剂量学中常用模体的反散射特性与人体反散射特性的近似程度。

Objective To determine the approximation of backscatter property of human body by stimulation phantoms commonly used in medical diagnostic X-ray dosimetry .

反散射理论导出He-Ne相互作用势

He-Ne Interatomic Potential from Inversion Scattering Theory

利用~（46）Sc制成的平面源，仔细研究了探测器在不同水层厚度复盖条件下，γ射线反散射作用的影响。

The relation between the intensity of the scattered γ - rays and the various water depths was studied by using a ~ ( 46 ) Sc plane source .

反散射变换和正规Riemann-Hilbert问题

Inverse scattering transform and regular Riemann-Hilbert Problem

本文依据反散射理论，利用Born近似将非线性波动算子线性化，通过格林函数建立散射波场与散射势能的关系；

This method includes the following steps : . Linearization of nonlinear wave operator with the aid of inverse scattering theory and Born approximation . Using Green 'S function to determine the relation between scattering wave field and scattering potential energy .

求解DNLS方程的反散射法的基本问题

The fundamental problem of inverse scattering method in solving the DNLS equation

研究一类声波反散射的传输问题，用格林定理和单双层位势的跳跃关系刻画了相应远场模式U（V）的闭包型空间。

This paper discusses the inverse scattering problem with transmission boundary condition . Green 's theorem and the jump relation of the single - layer and double - layer potentials are used to characterize spaces of the form closure of the far field patterns U ( V ) .

仿射参数的原点和无穷远点均对应于谱参数的无穷远，这两点处的Jost解作为边界，必应都在反散射变换中起作用。

The origin and the infinite point on the plane of the affine parameter correspond to the infinite points of the two Reimann sheets .

在阶化量子反散射的框架中，得到FBF背景下，带反射边界条件的超对称t－J模型的本征值和本征矢，及相应的Betheansatz方程。

In the framwork of the graded quantum inverse scattering method ( QISM ), we obtain the eigenvalues and eigenvectors of supersymmetric t-J model with reflecting boundary conditions in FBF background . The corresponding Bethe ansatz equation are also obtained .

接着借助量子反散射方法，运用两体散射矩阵和反射矩阵，构造了双行monodromy矩阵、转移矩阵和系统的边界反射方程，从而详细证明了系统的精确可解性。

Then , we set up the double-row monodromy matrix of the Hamiltonian , the transfer matrix and the reflection equation of the system with the help of the scattering matrix and the reflecting matrix .

同时在文中考虑了多实验数据下远场测量的反散射问题的计算，并在数值实验中分析和总结了不同扰动下每步迭代的正则化参数，说明了它的选取符合Tikhonov正则化理论。

We realized the computation in inverse medium scattering problems with multi-experimental data of far field pattern . Moreover , the analytical result of that the selected regularized parameter in each iteration accord with Tikhonov regularization theory from a few of numerical experiments is stated .

文中也讨论了β吸收剂量反散射系数的某些变化规律和应用。

Some regularity and applications of the backscattering coefficients were discussed .

可以用反散射变换求解的一类非线性方程

A Class of Nonlinear Equations Solvable by the Inverse Scattering Transform

测量超光滑表面粗糙度参数的反散射计算研究

Investigation of inverse scattering calculation for measuring roughness parameters of super-smooth surface

γ反散射橡胶测厚仪

A gamma - backscattering thickness gauge for rubber foil in the calender

γ射线康普顿反散射成像研究

Research in γ - ray imaging system using Compton back-scattering

手性障碍电磁反散射边界重构问题及其计算

The boundary reconstruction and computation of chiral obstacle in electromagnetic scattering problems

用超薄型热释光元件测量介质对β射线反散射的方法

Measurement of β ray backscattering coefficients by an ultrathin TLD

孤立子2＋1维离散方程的反散射变换

The Inverse Scattering Transformation of the 2 + 1 Dimensions Discrete Equation

电子与原子（分子）碰撞的反散射理论

Inverse scattering theory for electron collision with atoms and molecules

线性黏弹性介质中波动方程的反散射解

Inverse scattering solution of wave equation in linear viscoelastic medium

手性介质中某些电磁散射和反散射问题的研究

Study of Some Electromagnetic Scattering and Inverse Scattering Problems for Chiral Media

影响γ反散射光子计数因素的分析

The analysis of factors influencing γ ray backscattering count

提高反散射测量方法灵敏度的研究

Study on improving sensitivity of back - scattering measurement

关于声波障碍反散射问题

On Inverse Acoustic Scattering Problem by an Obstacle