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intra-nuclear
相关语句
  核内
    The nuclear reaction is calculated using intra-nuclear cascade model.
    核反应过程采用核内级联模型。
短句来源
    And based on the intra-nuclear cascade model,the p-SEU cross sections of some devices are calculated.
    并基于高能质子的核内级联模型,采用蒙特卡罗方法,计算了一些器件的单粒子翻转截面。
短句来源
    After comparison with the result published and experimental data,it showed that it is a very good choice using intra-nuclear cascade model to simulate protons' nuclear reaction.
    经比较和分析发现,用核内级联模型模拟质子的核反应,在入射质子的能量很高(>50MeV)时与文献和实验结果吻合得非常好;
短句来源
    The theoretical frames of MEND are spherical optical model,intra-nuclear cascade model,pre-equilibrium emission theory based on exciton model,evaporation model and Hauser-Feshbach statistical theory with width fluctuation correction.
    MEND程序的理论框架基于球形光学模型、核子的核内级联发射模型、以激子模型为基础的预平衡发射理论、蒸发模型和带宽度涨落修正的Hauser-Feshbach统计理论。
短句来源
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  intra-nuclear
Intra-nuclear localization of two envelope proteins, gB and gD, of herpes simplex virus
      
Studies with the monkey-intra-nuclear-inclusion-agent (MINIA) and foamy-agent
      
Studies with the monkey-intra-nuclear-inclusion-agent (MINIA) and foamy-agent derived from spontaneously degenerating monkey kid
      
This case of interstitial pneumonia was caused by the measles virus, with intracytoplasmic inclusion bodies in giant cells and type II alveolar cells in alveolar and bronchiolar spaces, with rare intra-nuclear inclusion bodies.
      
The intra-nuclear rod which extends from the middle piece to the base of the acrosome is derived from the proximal centrosome.
      
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Developing nuclear data needs towards to sustainable development on fission reactor design and many nuclear applications out the field of fission reactor technology that are growing economic significance and that have substantial data requirements are introduced. International standard codes used in nuclear data evaluation and calculation are presented and compared with each other. Generally speaking, three rather wide groups of nuclear reaction models used usually are also described. They are the formal theories...

Developing nuclear data needs towards to sustainable development on fission reactor design and many nuclear applications out the field of fission reactor technology that are growing economic significance and that have substantial data requirements are introduced. International standard codes used in nuclear data evaluation and calculation are presented and compared with each other. Generally speaking, three rather wide groups of nuclear reaction models used usually are also described. They are the formal theories of resonance reactions, generalized statistical models including fission, pre equilibrium and direct processes and combined with the optical model, and the intra nuclear cascade models. Recent progress of these nuclear reaction theories are given briefly, specially the recent progress of multi step compound and direct and state density are introduced in more detail.

简要介绍了国际上发展中的核科学和技术及其应用对微观核数据的需求和核数据理论计算中现有标准程序的基本情况 ,并做了相应的分析和比对 .同时也简要介绍了国际上核数据理论计算中模型方法研究的新进展

Based on the nuclear reaction models and the experimental data of proton reaction cross sections,energy spectra and elastic scattering angular distributions of 58Ni,all kinds of cross sections,energy spectra,and the double differential cross sections of neutrons,protons,alpha,deuterons,tritons and helium emissions are calculated and analyzed for 58Ni(p,x) reaction at incident proton energies below 200 MeV with the large calculation code MEND developed previously by the authors.The theoretical frames of MEND...

Based on the nuclear reaction models and the experimental data of proton reaction cross sections,energy spectra and elastic scattering angular distributions of 58Ni,all kinds of cross sections,energy spectra,and the double differential cross sections of neutrons,protons,alpha,deuterons,tritons and helium emissions are calculated and analyzed for 58Ni(p,x) reaction at incident proton energies below 200 MeV with the large calculation code MEND developed previously by the authors.The theoretical frames of MEND are spherical optical model,intra-nuclear cascade model,pre-equilibrium emission theory based on exciton model,evaporation model and Hauser-Feshbach statistical theory with width fluctuation correction.The optical potential parameters are searched automatically with the code APMN to fit the experimental data of reaction cross sections and elastic scattering angular distributions of p+58Ni reaction.Based on the energy spectra results calculated with the code MEND and the Kalbach systematic formulae,the double differential cross sections of particle emission are obtained.Theoretical calculation results are compared with existing experimental data and with the results of the evaluated ENDF/B6 file.As a whole,theoretical calculation results agree with the experimental data.Compared with the ENDF/B6 file,calculations of 3He are considered and the energy region is extended up to 200 MeV.

以现有质子诱发58Ni的各种核反应截面、能谱、双微分截面、弹性散射角分布等实验数据为基础,利用自行研制的大型核模型计算程序MEND计算质子能量在200 MeV能区内58Ni(p,x)反应的截面、能谱、角分布和n、p、α、dt、3、He 6种出射轻粒子的双微分截面。MEND程序的理论框架基于球形光学模型、核子的核内级联发射模型、以激子模型为基础的预平衡发射理论、蒸发模型和带宽度涨落修正的Hauser-Feshbach统计理论。光学模型中的势参数由APMN程序通过符合p+58Ni反应的去弹截面和弹性散射角分布获得。出射粒子的双微分截面则利用MEND程序输出的能谱再通过Kalbach系统学公式计算。将计算结果与实验数据及ENDF/B6评价库进行了比较,计算结果与实验数据基本一致,与ENDF/B6相比,增加了3He的计算,且将能区上推至200 MeV。

Reactions of bombarding important target materials in the Accelerator Driven System (ADS), such as 204Pb, 206pb, 207pb, 208pb, 209Bi,196Hg,198Hg, 199Hg, 200Hg 201Hg, 202Hg and 204Hg etc., with protons are calulated in terms of the optical model, the intra-nuclear cascade mechanism for nucleon emission, the pre-equilibrium theory based on exciton model, the evaporation model, the pick-up mechanism and the direct reaction theory in the energy range up to 250MeV. In particular, the cross sections of the (p,...

Reactions of bombarding important target materials in the Accelerator Driven System (ADS), such as 204Pb, 206pb, 207pb, 208pb, 209Bi,196Hg,198Hg, 199Hg, 200Hg 201Hg, 202Hg and 204Hg etc., with protons are calulated in terms of the optical model, the intra-nuclear cascade mechanism for nucleon emission, the pre-equilibrium theory based on exciton model, the evaporation model, the pick-up mechanism and the direct reaction theory in the energy range up to 250MeV. In particular, the cross sections of the (p, kn), and (p, kpkn) reactions and the spectra of particle emissions are studied. The calculations show that the pre-equilibrium (including cascade) mechanism is much stronger than the other mechanisms in the higher energy region. The parameter DK of the exciton model and ccg1 in the single particle energy density dominate the shapes of the cross section curves of the (p, kn) and (p, kpkn) reactions and the energy spectra of emitting protons and neutrons. The pick-up mechanism plays an important role in emitting composite particles (α, D, T, 3He).

在光学模型、预平衡激子模型、蒸发模型、核内级连、PICK-UP机制等理论的基础上,对入射能到250MeV质子入射中重核204Pb,206pb,207Pb,208Pb,209Bi,196Hg,198Hg,199Hg,200Hg,210Hg, 202Hg和204Hg反应进行了系统的计算,重点对出射粒子能谱进行了仔细的研究.结果表明,能量较高时预平衡反应机制占主导地位,出射粒子的能谱形状在很大程度上决定于激子模型参数DK和激子态密度,本文给出了能量相关的单粒子态密度修正经验公式;考虑了PICK-UP机制后复杂粒子(α,D,T, 3He)的能谱有很大改善.

 

 


 
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