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弹性散射截面     
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  elastic cross section
     Based on experimental data of total,nonelastic, elastic cross section and elastic scattering angular distributions for n+Sn reactions, a set of neutron optical model potential parameters is obtained.
     应用现有的中子与原子核Sn及其同位素反应的总截面 ,去弹性散射截面 ,弹性散射截面和弹性散射角分布的实验数据 ,获得一组普适的中子与Sn及其同位素反应的光学模型势参数 .
短句来源
  elastic scattering cross section
     In this paper, a method for calculating elastic scattering cross section of low energy electron based on solving relativistic Dirac equation is given, the cross sections calculated by applying Thomas-Fermi-Dirac (TFD) potential and Hartree-Fock (HF )potential respectively are compared, the cross sections of elements C, Al, Cu, Ag, Au are calculated, the differences between Mott model. Pendry model and Rutherford formula are also compared and analysed.
     本文给出一个基于解相对论Dirac方程计算低能电子弹性散射截面的方法,比较Thomas-Fermi-Dirac(TFD)势及Hartree-Fock(HF)势对散射截面计算的影响,计算了C、Al、Cu、Ag、Au等多种元素在0.01~10keV能量范围的弹性散射截面,比较分析Mott模型、Pendry模型以及屏蔽的Rutherford截面之间的差异。
短句来源
     The methods of differentiation of elastic scattering and electromagneticdissociations are given. The experimental values of the mean free paths of in-teractions between 14.6 A GeV ~(16)O and nuclear emulsion are used to calculatereaction cross sections. We obtained the elastic scattering cross section on ~(16)O-Hand the electromagnetic dissociation cross section of ~(16)O in nuclear emulsion.
     本文介绍弹性散射和电磁离解事例判选原则,利用14.6A GeV ~(16)O 与核乳胶相互作用平均自由程的实验值,给出计算反应截面的方法,得到 ~(16)O与核乳胶的H 靶弹性散射截面以及核乳胶对 ~(16)O 电磁离解截面.
短句来源
     The optimization procedure of the different energy range models to deal with Monte Carlo simulations in the electron beam lithography in the ranges of 0.1 keV~30 keV is suggested,in which the Mott elastic scattering cross section is used for all elastic scatterings.
     提出了在0.1 keV~30 keV能量范围内进行电子束曝光Monte Carlo模拟的分段散射模型优化方案。 在该方案中,对所有的弹性散射均采用精确的Mott弹性散射截面
短句来源
  elastic scattering cross sections
     The differential elastic scattering cross sections of 14.7MeV neutrons from Zr and Nb have been measured by the position-sensitive spectrometer and associated particle time- of- flight method at 7 angles ranging from 3° to 15° .
     用快中子位置灵敏谱仪和伴随粒子飞行时间方法,在3°—15°角区测量了14.7MeV中子在Zr和Nb上的弹性散射截面
短句来源
     BNDF/B6 provides the elastic scattering cross sections between neutrons and hydrogen nuclei, neutron energy ranges 0~20MeV, dividing 95 energy points.
     中子与氢核的弹性散射截面采用ENDF/B6数据,中子的能量范围为0-20MeV,划分为95个能量点。
短句来源
     The elastic scattering cross sections of fast neutrons on 7Li and 6Li nuclei at incident angles below 5 are measured by the associated particle time-of-fight method.
     利用伴随粒子飞行时间方法,测量了入射角在5°以下、快中子在~7Li、~6Li核上弹性散射截面
短句来源
     The total cross sections elastic scattering cross sections and angular distributions, the inelastic scattering cross sections and angular distributions of low excitation state of the 9.72 MeV neutrons on 10B and 9.97,12.06,14.10,18.12MeV neutrons on 11B, and the reaction cross sections and angular distribution of (n,p) , (n,d) , (n,t) ,and (n,a) reactions, as well as the branching ratio of 11(n,a0) 8Lis and 11B (n,a1) 8Liist were obtained.
     得到了9.72MeV中子对~(10)B和9.97,12.06,14.10,18.12MeV中子对~(11)B反应的总截面、弹性散射截面与角分布、低激发态的非弹性散射截面与角分布、(n,p)、(n,d)、(n,t)和(n,α)反应的截面与角分布,以及~(11)B(n,α_0)~8Li基态与~(11)B(n,α_1)~8Li第一激发态的分支比。
短句来源
     The elastic scattering cross sections of fast neutrens into angles below 5° from 7Li and 6Li nuclei have bee measured by the associated particle time of fight method. The corrections for neutron fluence attenuation,multinle scattering and fimite angle geometry are perfamed by using Mote Carlo Code. The experimental results are compared with the theoretical calcuation based on the optical model for the results provide data needed in nuclear engineering design.
     利用伴随粒子飞行时间方法,测量了入射角为5°以下的快中子在7Li和6Li核上的弹性散射截面.用蒙特卡洛方法进行了注量率衰减、多次散射和有限角分辨修正.对实验结果与理论计算进行了比较,其数据可为核工程设计提供必要的核参数.
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  “弹性散射截面”译为未确定词的双语例句
     Using Tang-Toennies potential model and CC method, H—H_2 interaction potential and many kinds cross sections of H—H_2 elastic collision and rovibration transition are calculated. The collision energy range from 1.5meV to 600 mev.
     本文用Tang-Toennies非刚性转子模型(T.T.势模型)计算了H-H_2系统相互作用势,并用密耦方法(CC方法)计算了入射能量在1.5meV至600meV范围H—H_2碰撞的多种弹性散射截面、振动和转动激发截面。
短句来源
     Cross Sections of Small Angle Fast Neutron Elastic Scattering On 7Li And 6Li Nuclei
     快中子在国~7Li、~6Li核上小角弹性散射截面
短句来源
     The longstanding discrepancy between theoretical calculations and experimental data in K +- 6 Li elastic scattering may be improved in the framework of Glauber theory, concerning the relatively loosely bound nuclear density distribution.
     在 Glauber理论框架下 ,考虑了 6Li核束缚相对松散的核密度 ,计算了 K+-6Li弹性散射截面比 RT,改进了理论计算和实验数据长期存在的偏差 ,这表明本文对 6Li核密度分布“长尾巴”的特殊考虑是必要的 .
短句来源
     The 2π→2K low energy scattering cross-section was obtained using the relation
     本文利用场流关系和低能定理求得2π→2K低能散射的截面,并利用交叉对称性得到低能πK弹性散射截面和散射长度。
短句来源
     The elastic scattering cross-sections of element Be, C, Al, Cu are calculated and compared to Rutherford cross -section.
     计算了元素Be、C、Al、Cu等的弹性散射截面,并与Screen-Rutherford截面进行比较。
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  elastic cross section
The diffuse elastic cross section for neutrons is derived as for Huang scattering.
      
The effect of absorption potential is generally to reduce the elastic cross section.
      
A quantal calculation to evaluate theoretically the elastic cross section of electrons scattered by metal clusters is presented.
      
The differential elastic cross section is measured at 50 keV intervals with an ≈20 keV incident neutron energy spread.
      
The velocity dependence of the total elastic cross section has been measured for the scattering of H2, D2, and He beams by Ne, Ar, Kr, and Xe gases.
      
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  elastic scattering cross section
The results of calculations of the elastic scattering cross section of positrons on noble gas and alkali atoms are presented.
      
The irregular energy dependence of the elastic scattering cross section at 180° is analysed assuming that the non-regular components of the partial amplitudes depend on the energy.
      
The strengths of theEc.m.=324 and 829 keV resonances in19F(ρ, αγ)16O have been determined relative to the Rutherford elastic scattering cross section.
      
Absolute values of elastic scattering cross section of protons in the energy region 600-2,000 keV have been measured on oxygen for scattering angles between 110 and 160°.
      
We present calculations of the quenching of the spin-dependent elastic scattering cross section for dark matter WIMPs on heavy nuclei.
      
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  elastic scattering cross sections
The charge-exchange, ionization, and elastic scattering cross sections are calculated for the atoms and ions involved in cascade evolution.
      
The resonance elastic scattering cross sections in the presence of arbitrary statistical unevenness are calculated in the Born approximation for all channels in which the initial and final states are represented by an electromagnetic TM or TE mode.
      
The differential elastic scattering cross sections of N2 and O2 for 29 keV electrons have been measured.
      
The differential elastic scattering cross sections were determined approximately every fifteen degrees from 20 to 145 degrees.
      
The measured elastic scattering cross sections were compared with the results of optical model calculations and evidence for a decrease in the imaginary part of the potential near the doubly closed shell atA=208 was observed.
      
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In this paper, it is attempted to give a comprehensive survey of recent experimental works on theπ-N and pinteractions with kinetic energies of incident π-mesons, protons and antiprotons, ranging from a few hundred Mev to 10 Bev. Experimental results concerning cross-sections of total scattering, elastic scattering and inelastic scattering of these interactions are summarized and analysed. Curves representing the trend of change of these cross-sections with energies are presented and compared with theoretical...

In this paper, it is attempted to give a comprehensive survey of recent experimental works on theπ-N and pinteractions with kinetic energies of incident π-mesons, protons and antiprotons, ranging from a few hundred Mev to 10 Bev. Experimental results concerning cross-sections of total scattering, elastic scattering and inelastic scattering of these interactions are summarized and analysed. Curves representing the trend of change of these cross-sections with energies are presented and compared with theoretical predictions. Some interesting points of these curves are indicated. In the case of π-N N interactions, the appea-rence of some resonance peaks are demonstrated and their interpretations by some theoreticians are described. For elastic scatterings, the angular distributions of differential cross-sections are compared with optical model. For inelastic collisions, the multiplicities, angular and momentum distributions and transversal momenta of secondary particles and the variations of these quantities with energies are described and discussed. Special attention being paid on the persistence of the backword scattering of protons in the case of π--ρ interactions and the symmtrical but nonisotropic scattering of protons in the case of p-p interactions. These phenomena are attributed to the so called peripherical " collision of the interacting nucleons. This and other facts in elastic scattering may indicate that nucleon really has a "nucleus" but of very small dimension ( ≤ 0.4 X 10-13 cm in raduis).

本文试把到写稿时为止(1961年3月底)的一切关于π-N,p-N和-p的作用和入射粒子能量在几百Mev.至10Bev.范围以内的实验工作予以报导和总论。举凡关于这些作用的总截面、弹性散射截面和非弹性散射截面,都经收集整理,并加以分析。这些截面随能量的增减而变化的情况,都以曲线表达,并且与理论结果作出比较。曲线中有几个重要和有趣之点,也予以指出。在π-N作用中的几个共振峯和关于他们的理论解释,也经较详细的叙述。在弹性散射方面,我们将微分截面的角分布和理论作了比较。在非弹性散射方面,我们把多重产生、动量分布、角分布、横动量和它们与入射粒子能量的关系,都加以分析和讨论。我们特别注意和讨论了下列二种情况:在π-p作用时,质子总是向后散射;而在p-p作用时,两个质子总是不各向均匀地但向前后对称地散射。这种现象被称为质子的“边缘”碰撞。我们认为,这些和其他事实都可能表明了在质子内的确有“核心”的存在,而且这个“核心”非常的小,它的直径比O.4×10~(-13)厘米要小得多。

The extended Chew-Low equation for π-N scattering under two pion approximation is solved by neglecting contribution from the crossing terms. From rapidly increasing pion-production cross-section we calculated the elastic scattering cross-section of the D3/2 channal (T=1/2). The peak of elastic scattering cross-section in the second resonance is explained.

本文基于由推广的Chew-Low(弹性散射)静止理论所导得的双介子近似下的分波方程,在略去交叉项的贡献后求得其近似解。由很快上升的介子产生截面计算了3/2道(T=1/2)弹性散射截面,定性和半定量地解释了π-N第二共振处弹性散射截面中峯的出现、性质、位置和大小。

The elastic scattering cross-sections of 158 Mev and 340 Mev neutrons by deuteron with velocity-dependent nucleon-nucleon interactions have been calculated in the Born approximation. The obtained results are compared with the Corresponding expermentel data, and also compared with the similar calculations of p-d scattering made by Bransden with Jastrow portential. The coutributions from the interference of S-and D-states of the deuteron have also been studied.

在本文中用速度有关的核子核子作用势在Born近似下,計算了158 Mev及340 Mev的中子对氘核彈性散射截面。把得到的結果和相应的实驗数据进行了比較,同时也和Bransden用Jastrow作用势所做的p-d散射的类似計算进行了比較。另外,还研究了氘核的S-态和D-态的干涉項的貢献。

 
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