Monte-Carlo Simulation Method in Pulsed Neutron Density Logging While Drilling 随钻脉冲中子密度测井的蒙特卡罗模拟研究
Logarithmic power measuring assembly based on the neutron flux density 根据中子通量密度的对数功率测量装置
Neutron flux density indicator 中子通量密度指示器
Diffusion coefficient for neutron number density 中子数密度扩散系数
Neutron flux density scanning assembly 中子通量密度扫描装置
A Correction of Saturation Data Obtained From Sealed Core Analysis Monte-Carlo Simulation Method in Pulsed Neutron Density Logging While Drilling 密闭取心井岩石饱和度测量数据校正方法随钻脉冲中子密度测井的蒙特卡罗模拟研究
The thermal neutron flux density is measured with Soild State Nuclear Track Detector ( SSNTD), and the γ radiation dose rate is detected with Thermoluminescence Dosimeter ( TLD). 中子通量密度采用固体核径迹探测器测量,γ辐射剂量率用热释光探测器测定。
Gas flow neutron density measuring assembly 柳型中子密度测量装置
Measurement of Absolute Neutron Flux Density by Peak Area Ratio Method 峰面积比法测量绝对热中子注量率
So, a new oil-gas corrective method, progressively correcting the influence of oil-gas on neutron density log by superposition and calculating out oil-gas density and neutron porosity to form crossplot. 文章提出一种新的油气校正方法,即用叠代法逐步校正油气对中子与密度曲线的影响,计算出油气密度与油气的中子孔隙度,并以此参数构成交会图。
It turns out that the influence of the Fock term and isovector mesons on the properties of neutron very rich nuclei, such as binding energies, RMS of neutron radius, distribution of neutron density, is very different from those of stable nuclei. 研究表明:交换项和矢量介子对非常丰中子核的性质,如结合能、中子均方根半径和中子密度分布的影响不同于对稳定线附近核性质的影响。
It is demonstrated that when the static adjointed neutron density or the neutron importance is selected to be a weight function for generating kinetic parameters used in the neutron kinetic equations, the kinetic reactivity is approximately equal to the static reactivity. 文中讨论了:在选择静态伴中子密度或中子价值作为权重函数以确定中子动力学方程的动态参数时,动力学反应性近似等于静态反应性。
Gas exploration by neutron and density logging 利用中子与密度测井勘探天然气
This paper introduces 32-bit data acquisition software of neutron flux density temporal and spatial distribution on Windows 98 Platform. 介绍基于Windows98平台的中子注量率密度时空分布32位数据采集软件。
At last, we can indicate the asymptotic behavior of the neutron density ast →∞ and the asymptotic represent of the neutron distribution in the Hilbert space L_2 ( X). ∞时中子密度的渐近性质及在Hileert空间L2(X)内中子分布的渐近表示。
The renewal of the neutron and density logging gas-prospecting method 中子和密度测井找气方法的更新
In this paper, we study the existence and uniqueness of the global classical solutions for a class of neutron transport equations dependent upon time, and obtain the asymptotic behavior of the solutions which distributions of neutron density for this systems decay dependent upon the time increase. 本文研究了与时间有关的中子迁移方程经典解整体存在唯一性以及中子分布密度随时间的延长而衰减的渐近性质。
A special interpretation method for gas finding by neutron and density log 中子和密度测井找气的一种特殊解释方法
The abundance of H and heavy element in H-burning shell and neutron density and heavy element in He-burning shell are all reduced, but the abundance of the He is increased; 氢壳层内部氢和重元素及氦壳层内的中子数和重元素的丰度偏低,而氦元素丰度偏高;
The new method for thermal neutron flux density measurement by γ spectrometer is described. 介绍了利用γ谱仪测量绝对中子注量率的方法。
A predictive control method of the neutron flux density for a nuclear reactor 核电站反应堆中子通量密度的一种预测控制方法
Through the analysis of the stable neutron density of the subcritical reactor with extraneous neu-tron source, this paper proves that the formula of neutron multiplication with delayed neutron is of great use in the analysis of the subcritical reactor physics. 本文主要内容是通过对有外加中子源反应堆次临界状态下中子密度稳定值的分析,说明考虑缓发中子在内的中子倍增公式对次临界状态的反应堆物理分析是很有用的。
The space curvature of neutron density of this solution is changed according to the changes of reactor power, so it is more precise than the analytic solution of point reactor model. 此解的中子密度空间分布曲率是随堆功率变化的,因此它比点堆模型方程的解析解精确。
A New Equation of Neutron Density 新的中子密度方程
According to the nonlinear dynamic model of a nuclear reactor, a new constant neutron flux density control method based on nonlinear state feedback is presented. 针对核反应堆点堆动态非线性模型,提出了一种非线性状态反馈的中子通量密度恒值控制的新方法。
The neutron flux density ratio, Au-Cd ratio, Mn-Cd ratio at various positions in special neutron beam equipment are measured by gold foil method. 利用金箔活化法测量了特殊束流装置中心轴线上不同位置处的热中子通量密度比、金镉比、锰镉比以及出口处γ/n的剂量比。
Analysis of the Stable Neutron Density of Reactor with Extraneous Neutron Source 对有外加中子源时反应堆中子密度稳定值的分析
A sort of non-parameter model is constructed with the unit step response of the nuclear reactor neutron kinetics system. Furthermore, a sort of constant neutron flux density control law is presented using a predictive control algorithm. 利用核电站反应堆中子动力学系统的单位阶跃响应数据,获得了该系统的非参数模型,且提出了一种中子注量率恒值问题的预测控制方法。
Simulation Research of Reactor Neutron Flux Density 反应堆中子通量密度仿真研究
Through analyzing and contrasting, it is found that the effect of combining epithermal neutron with density logging is the best for indicating natural gas audio-visually and it is an effective nuclear logging combination for evaluating argillaceous sandstone gas reservoirs. 分析这三种核测井组合对比实例发现,超热中子与密度测井组合直观指示天然气的效果最好,是评价泥质砂岩气层有效的核测井组合。