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裂变     
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  fission
    THE ABSOLUTE DETERMINATION OF CUMULATIVE YIELDS OF SEVERAL NUCLIDES FROM 14.9MeV NEUTRON-INDUCED FISSION OF ~(238)U
    14.9MeV中子诱发~(238)U裂变时几个核素累计产额的绝对测量
短句来源
    THE ABSOLUTE DETERMINATION OF CUMULATIVE YIELD OF SEVERAL NUCLIDES FROM INDUCED FISSION OF ~(235)U BY NEUTRONS OF SPONTANEOUS FISSION OF ~(252)Cf
    ~(252)Cf自发裂变中子诱发~(235)U裂变时几个核素裂变产额的绝对测定
短句来源
    The Measurement of Fragment Angular Distributions for the 45ps fission isomer in ~(236m)pu
    ~(236m)Pu(45ps)裂变碎块角分布的测量
短句来源
    Determination of uranium content in natural water by means of fission track method
    用裂变径迹法测定天然水的铀含量
短句来源
    Etching conditions for fission tracks and technique of plating silver and gold
    裂变径迹的蚀刻条件及镀金镀银技术
短句来源
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  fissioning
    Influence of Curvature and Compressibility Energies upon Prescission Neutron Emission of Neutron-Deficient Fissioning Systems
    曲率能及压缩能对缺中子裂变系统断前中子发射的影响(英文)
短句来源
    The existence of different fission behavior of hot nuclei formed in central and peripheral collisions was found from the systematic analysis of the mass and energy distributions of fission fragments as a function of the initial temperature of hot fissioning nuclei.
    对裂变碎片质量分布和能量分布随热裂变核初始温度演化的系统分析 ,发现中心碰撞和周边碰撞所形成的热核存在着不同的裂变行为 .
短句来源
    Moreover, the dependencies of isotope effect on asymmetric fission and fissioning system size are also studied within the framework of a statistical model modified to include the effects of dissipation in fission by systematically investigating prescission particle evaporation of a light In isotope chain and a medium heavy Er isotope chain.
    表明断前粒子发射存在一个同位素效应 . 进而在一个考虑了裂变过程中摩擦效应的统计模型的框架内 ,在In和Er这两个元素的同位素链中 ,考察了同位素效应与裂变碎片质量不对称性和裂变系统尺度的关系 .
短句来源
    This means that for those neutron rich fissioning systems proton and α particle multiplicities will not be good probes for the study of nuclear friction in the fission of hot nuclei.
    这个结果暗示对那些特别丰中子的裂变系统 ,轻带电粒子 (质子和α粒子 )的多重性对于研究热核裂变过程中的摩擦强度不是一个好的探针 .
短句来源
  a fission
    A fission energy diagnostic technology with γ-ray measurement
    用测量γ射线诊断裂变能量技术
短句来源
    The dynamical calculation of quasi fission reaction induced by 10.6MeV/u 84 Kr on 27 Al is performed using one body dissipation model. The calculation suggests a fission time larger than 200×10 -22 sec. It is found that the threshold for emergence of quasi fission in the reactoin system is 8 MeV/u.
    用单体耗散模型对10.6MeV/u84Kr在27Al上引起的准裂变反应进行了计算,结果表明该准裂变反应的准裂变时间大于200×10-22s.发现对本反应系统,准裂变的出现至少需要8MeV/u阈能
短句来源
    The measuring results are consistent with that from a fission chamber.
    在不同系统上测量了中子 ,测量结果与用裂变室的测量结果一致。
短句来源
    A description is given of the principle, method and technology to determine the tissue kerma rates of the neutron and γ-rays in a fission neutron field produced by a fast reactor with a IRM81-TE1 tissue-equivalent ionization chamber made in China and a low neutron sensitivity energy-compensated G-M counter. Meanwhile, measurements are made with a FWTIC-17A tissue-equivalent ionization chamber. The results determined with the two chambers agree well with each other.
    介绍用国产 IRM81-TE1 型流气式组织等效电离室和低中子灵敏度的能量补偿 G-M 计数管测定快堆裂变中子和 γ 射线组织比释动能率,并用美国远西公司(FWT)IC-17A 型组织等效电离室进行了对比测量,两种电离室测量结果符合很好。
短句来源
    The numerical method of the statistics fluctuation problem of fission chain is studied for a fission system driven by a weak neutron source.
    研究了弱中子源驱动下,裂变系统中子裂变链统计涨落问题的数值计算方法。
短句来源
  neutron fission
    Measurement of fast neutron fission factor by solid State nuclear track detector
    固体径迹探测器测量快裂变因子
短句来源
    A NUMERICAL METHOD FOR STATISTICS FLUCTUATION PROBLEM OF NEUTRON FISSION CHAINS
    中子裂变链统计涨落问题的数值计算方法
短句来源
    A Numerical Method for Statistics Fluctuation Problem of Neutron Fission Chains (In Chinese)
    中子裂变链统计涨落问题的数值计算方法
短句来源
    The fission yield of 135 Cs in the thermal neutron fission of 235 U is measured accurately by a neutron activation analysis in which the fission fragments are recoiled to a Al catcher.
    应用裂变反冲法和中子活化分析法测定了热中子诱发235U裂变中135Cs的裂变产额。 主要研究内容包括:235U靶的制备;
短句来源
    This paper describes the principle, experimental method and result of themeasurement of fast neutron fission factor by means of a solid state nuclear trackdetector.
    介绍了利用固体径迹探测器测量快裂变因子的原理、方法和实验结果。
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  fission
Cenozoic uplift of West Qinling, northeast margin of Tibetan plateau-a detrital apatite fission track record from the Tianshui b
      
An epithermal neutron zone between the fast neutron zone and the thermal neutron zone can be established for the transmutation of longlived fission products (LLFP).
      
Fusion, Fragmentation, and Fission of Mitochondria
      
Mitochondrial shapes are also described which are interpreted as intermediates of their "equational" division, or fission.
      
This review considers molecular components and possible mechanisms of fusion, fragmentation, and fission of mitochondria, and the biological significance of these processes is discussed.
      
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  fissioning
In addition to the main process of binary fission, three branches of collinear three-body disintegration, which are associated with various mechanisms of the excitation of a deformed fissioning nucleus, are observed.
      
The analysis performed reveals that the coordinate-independent reduction coefficient ks is not compatible with the simultaneous description of the main fission characteristics for fissioning systems heavier than 224Th.
      
It is emphasized that angular anisotropy and various angular correlations of fission products are possible only if the fissioning nucleus remains nonthermalized during all the stages of fission from the saddle point to scission.
      
In contrast to prompt neutrons, scission neutrons are expected to mostly depend on the characteristics of the fissioning nucleus and, in particular, on its neutron number N.
      
The analysis is done for five compound nuclear systems representing heavy fissioning nuclei, medium fissioning nuclei, and a light fissioning one with the angular momentum varied in a wide range from l = 0 to 70?.
      
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  a fission
A Method for Determining the Average Charge inside a Fission Chamber
      
The channel consists of a fission chamber, a set of boron-containing gas-filled ionization chambers, and an electronic unit that ensures a counting rate of fission pulses of up to ~1 × 106 s-1.
      
It is shown that the widest linear range is achieved in channels equipped with a fission chamber and a gas-filled ionization chamber with electrodes coated with natural boron.
      
A fission ionization chamber has been designed to monitor neutron fluxes produced by the proton beam of the Van de Graaf accelerator in the 7Li(p, n)7Be nuclear reaction.
      
Under conditions of heavy-ion fusion (HIF), there arises the possibility of obtaining a fission chain reaction for a HIF cylindrical target (Koshkarev, Sharkov, 2002).
      
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  neutron fission
Division of nuclear charge in the thermal neutron fission of U235
      
Delayed neutron emission for thermal neutron fission of235U is investigated by means of a helium-filled mass separator.
      
Thermal neutron fission cross sections in the range 302≧A≧223
      
A least squares method is used to fit a smooth curve to known thermal neutron fission cross section data for nuclei of evenN.
      
Study of short-lived Ru-isotopes produced in thermal neutron fission of235U
      
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