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Journal of Nuclear Energy. Part A. Reactor Science最新文献

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Metallurgy of uranium 铀冶金
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80060-6
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引用次数: 0
A derivation of the time-dependent adjoint equations for neutron importance in the transport, continuous slowing-down and diffusion models 输运、连续减速和扩散模型中中子重要性随时间伴随方程的推导
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80002-3
Jeffery Lewins

A generalization of the conventional importance concept is to consider the contribution of any one neutron to some final operationally determinable characteristic of a nuclear reactor. Consistency requires that one neutron is as important as its progeny. From these ideas, the adjoint equations and boundary conditions are derived for the Boltzmann transport model, for simple and multigroup diffusion theory and for the continuous slowing-down model. This more general concept for the time-dependent importance includes the conventional expressions of iterated fission probability, etc. as special cases.

传统重要性概念的一个概括是考虑任何一个中子对核反应堆某些最终可确定的运行特性的贡献。一致性要求一个中子和它的后代一样重要。从这些思想出发，导出了玻尔兹曼输运模型、简单多群扩散理论和连续减速模型的伴随方程和边界条件。这个更一般的时间相关重要性的概念包括迭代裂变概率的常规表达式等作为特殊情况。
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引用次数: 4
The effect of a cylindrical channel on neutron diffusion 圆柱形通道对中子扩散的影响
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80020-5
N.I. Laletin

Voids in the core of a reactor affect the neutron leakage significantly and it is important to allow for this leakage when calculating a critical mass. It is also often of interest to know how empty channels affect the manner in which neutrons diffuse out of the core. The effect of a single hollow cylindrical channel is considered herein. Expressions are derived for the neutron leakage along a channel through the centre of the reactor and for the additional losses in the vicinity of the channel arising from the presence of the channel. The way the form of the flux distribution along the channel affects the applicability of diffusion formulae is considered.

反应堆堆芯的空隙会显著影响中子泄漏，在计算临界质量时考虑中子泄漏是很重要的。了解空通道如何影响中子向核外扩散的方式也经常引起人们的兴趣。本文考虑了单个空心圆柱通道的影响。推导了中子泄漏沿通道通过反应堆中心的表达式和通道附近由于通道的存在而产生的额外损失。考虑了沿通道通量分布形式对扩散公式适用性的影响。
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引用次数: 4
The monatomic gas model for thermal neutron distributions in a physical moderator 物理慢化剂中热中子分布的单原子气体模型
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80005-9
W.W. Clendenin

Comparison of infinite medium spectra of monatomic gases with varying ratios of atomic mass to neutron mass has been made and shows similarity of the spectra for low absorption and disparity for high absorption. Spectra of the scalar flux and the neutron current in large geometry also have been computed and used to obtain the thermal neutron diffusion length of the monatomic gas. The possibility of duplicating the scalar flux and the diffusion length of a physical moderator by means of a monatomic gas of suitable mass ratio is emphasized. A model of this type which reproduces the thermal neutron distribution in light water is obtained and the variation with temperature of the diffusion length of the model is compared with experiment.

对不同原子质量与中子质量比的单原子气体的无限介质光谱进行了比较，发现低吸收时光谱相似，高吸收时光谱不一致。计算了大几何尺度下的标量通量谱和中子电流谱，并利用它们求得了单原子气体的热中子扩散长度。强调了用适当质量比的单原子气体复制物理慢化剂的标量通量和扩散长度的可能性。得到了一个能再现热中子在轻水中的分布的模型，并与实验比较了该模型的扩散长度随温度的变化。
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引用次数: 1
The distribution of fission-fragment kinetic energy in ternary fission of 235U by thermal neutrons 热中子作用下235U三元裂变中裂变碎片动能分布
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80031-X
V.I. Mostovo, T.A. Mostovaya, M. Sovinski, Yu. S. Saltykov
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引用次数: 0
On the existence of light nuclei with large proton or neutron excess 关于质子或中子大量过剩的轻核的存在
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80024-2
A.I. Baz
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引用次数: 1
Calculation of the heat release in a shut-down reactor 反应堆停堆时放热的计算
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80022-9
T.N. Zubarev, A.K. Sokolov
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引用次数: 0
The range in aluminium of 14·7 MeV protons 铝中质子的范围为14.7兆电子伏
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80036-9
M.Ya. Gen, Yu.I. Petrov
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引用次数: 0
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80011-4
F.W. Fenning
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引用次数: 0
The interaction between fast nucleons and nuclei in the NIKFI-R photographic emulsion NIKFI-R感光乳剂中快核子与原子核的相互作用
Journal of Nuclear Energy. Part A. Reactor Science
Pub Date : 1960-10-01 DOI: 10.1016/S0368-3265(60)80033-3
V.S. Barashenkov, V.A. Belyakov, Wang Shu-Fên, V.V. Glagolev, N. Dolkhazhav, L.F. Kirillova, R.M. Lebedev, V.M. Mal'tsev, P.K. Markov, K.D. Tolstov, E.N. Tsyganov, M.G. Shafranova, Yao Ch'ing-Hsieh
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引用次数: 1
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