核半径

关于原子核半径的知识有各种来源。

Information on nuclear radius comes from a variety of sources .

水核半径对微乳液制备磁性纳米Ni-Fe复合微粒的影响

The Selection of [ Water ] / [ Surfactant ] Ratio Condition for Prepare Ni-Fe Composite Magnetic Nanoparticles by Microemulsion

提出疲劳裂纹尖端塑性核半径门槛值Rth的概念及计算方法，Rth是材料性质。

In this paper , a concept for the radius of plastic core at the top of a fatigue crack is raised .

当核半径与壳厚度之比在4到13之间变化时，复合粒子的光学共振峰在可见光区到近红外光区范围内可发生大于500nm波长的移动。

As the core radius-shell thickness ration was varied between 4 and 13 , the optical resonance of these composite particles could move more than 500 nm in wavelength , across the visible and into the infrared region of the spectrum .

结果表明：NP-9/正己醇/正庚烷/硝酸锌溶液微乳液体系的水核半径在308K和318K分别为1.86nm和2.33nm，可以作为制备纳米粒子的微反应器。

The results show that the radius of water droplet of NP-9 / hexanol / heptane / zinc nitrate solution microemulsion at 308 K and 318 K is 1.86 nm and 2.33 nm respectively , and such microemulsion is a good medium for the synthesis of nanoparticles .

核半径的弥散效应和形变效应

Diffuseness and deformation effect in nuclear charge radius

对不同试验测量的旋涡水面线，采用本方法计算了涡核半径。

With the proposed method , the vortex core radius is determined by the vortex water-surface profile .

研究了初始晶核半径、空间步长和各向异性对纯铝枝晶生长的影响。

The dependence of aluminum dendrite growth on the initial nucleus radius , space step and anisotropy is investigated .

本文给出了深过冷条件下金属的临界形核半径。

In this paper the critical nucleation radius of metals under the highly undercooling condition has been drawn out .

实验数据分析结果表明，汽化核心密度与最小成核半径之间呈分形关系。

The result of experimental data analysis shows that the relationship between the nucleation site density and the minimum nucleation radius is fractal .

在该体系稳定区内，通过调整ω，可改变微乳水核半径。

The radius of the water droplet of the microemulsion is different by changing the value of ω in the stable phase regions of the microemulsion .

预测结果和实验数据吻合，并且表明汽化核心密度和最小成核半径之间为分形的关系。

The prediction agrees well with the experimental data and shows that it is the fractal relationship between the nucleation site density and the minimum nucleation radius .

通过一个易于确定的特征参数-旋涡水面线最大曲率点到中轴线的距离，来间接计算涡核半径的方法。

The vortex core radius is calculated by an easily determined characteristic parameter , i.e.The distance from the position of the maximum water-surface curvature to the vortex symmetry axis .

建立了一个旋翼桨尖涡初始涡核半径计算模型，用于消除旋翼自由尾迹分析中桨尖涡涡核半径依靠经验设定的现状。

A model is developed for the calculation of the initial rotor tip vortex core radius aiming at eliminating the empirical parameters of the tip vortex in rotor free-vortex wake analysis .

研究了空间剖分步长、初始晶核半径、各向异性系数和过冷度对模拟结果的影响，确定了这些关键参数的取值范围。

The dependence of simulation results on the space step , the initial nucleus radius , anisotropy and undercooling studied , and how to choose the values of these parameters is settled .

用相图法分析了微乳液体系的热力学稳定性，计算了水核半径的大小，并考察了影响微乳液W/O区域范围的各种因素。

The thermodynamic stability of the microemulsion was inspected by phase diagram method , the radius of the microemulsion droplets were calculated and the W / O zone of the emulsions was confirmed .

上述离散的测量尺度和测量结果的数据可以被拟合成一个数学公式。这个数学公式可以被用以预测汽化核心密度和最小成核半径之间的关系。

And then the above discrete data of measurement scales and measurement results are fitted by a mathematical formula which is used to predict the relationship between the nucleation site densities and the minimum nucleation radius .

通过计算结果表明，在保证初始晶核半径不被熔化前提下，初始晶核半径不影响枝晶形貌；

By a series of simulation , the calculated results indicate that the value of the initial nucleus radius has not influence upon the dendrite patterns with the precondition that initial nucleus can not be melted ;

为了研究纳米粒子生长的动力学特征，用稀释法求取了该过程所涉及的NP-9/正己醇/正庚烷/硝酸锌溶液微乳液体系的水核半径；

To probe in the kinetic features of the growth of zinc oxalate nanoparticles , the radius of the water droplet of NP-9 / hexanol / heptane / zinc nitrate solution microemulsion was inspected through diluting method ;

在径向异质结构中，对于一定的核半径和壳层厚度，理论计算得到了壳层中的位错密度，并与实验数据进行对比和分析。

In the case of radial heterostructures , for some core radius and a certain thickness of the shell , the dislocation density in the shell obtained from theoretical calculation are compared and analysed with the experimental data .

自由表面旋涡在演化过程中，切向速度在半径方向上随着半径的增大先增大后减小，在变化过程中切向速度存在最大值，并以此对应的半径定义了涡核半径。

In the evolution of the free surface vortex , with the radius increasing , the tangential velocity increases to a maximum value and then decreases . The radius corresponding to the maximum tangential velocity is defined as the vortex core radius .

结果表明，在核半径不是很大，而动量转移很大的情况下，高纽度的贡献将被压低，以至于可以忽略；

It is shown that when the radius of the nucleus ( R α) is not very large but the momentum transfer ( Q2 ) is large , one can only consider double scattering because all higher twist contributions will be suppressed significantly .

在9月30号，政府撤销了对于核工厂半径20-30km范围内市民的撤离警告。

On September30th the government lifted an evacuation advisory warning to communities within a20-30km radius of the plant .

核电荷半径的壳（形变）效应

Shell ( deformation ) effect in nuclear charge radius

计算出气体水合物的吸附过程中受温度和压力影响的动力学因素&成核临界半径。

Dynamic factor , critical radii effected by temperature and pressure in natural gas hydrate formation is calculated .

理论研究表明：共振频率主要受到粒子核壳半径比调制；此外，外界环境、粒子形状、尺寸大小也会对共振波峰产生影响。

It has been discovered that the resonance frequency is mainly modulated by the core-shell radius ratio of a particle .

当极化电流密度较小时，涡旋核进动半径随着环中心半径的增大而单调递增。

With a small polarization current density , the precession radius increases with the increasing of the radius of the ring .

原子核的半径，相对于整个原子的半径来说，是1比10000这个数量级。

The radius of the nucleus as compared to the radius of the entire atom is on the order of about one to10,000 .

当极化电流密度较大时，涡旋核进动半径随着环中心半径的增大，呈现先减小后增大的规律。

As the polarization current density becomes large , the precession radius decreases firstly and increases afterward with the increasing of the radius of the ring .

从所测量的同位素位移值，推算出稳定氪的平均平方核电荷半径变化δ〈γ~2〉。

From the measured values of the , isotope shifts the changes in the nuclear mean square charge radii δ for stable Kr isotope are calculated .