原子序数

300~反应堆乏燃料组件的转运屏蔽与监测屏蔽物由不同原子序数的三种物质的夹层组成。

Transportation Shielding and Surveying of Spent Fuel Elements in SPRR-300 The filter is constructed as a sandwich from three materials of different atomic number .

R是与有效原子序数直接相关的量。

R is a reference referring to effective atomic number directly .

从理论和实验两个角度，描述了物质原子序数对X射线背散射成像的影响、试验环境的影响和噪声的产生机理及影响。

The affections of the atomic number , the experimental environment and the noise are showed from principle and-experiment .

原子序数低的CH薄膜在惯性约束聚变实验用靶的制备中应用很广泛。

Low Z materials such as CH films is useful in ICF targets fabrication .

随着原子序数增加，TA与LA的态密度峰高之比递次增大。

The rate of the peak heights for the density of states of TA and LA increases with the atomic number .

铋元素具有比碘更高的原子序数，导致了它具有更高的x-射线衰减系数，在理论上能提高CT成像的对比度。

Bi with a higher atomic number than iodine is expected to have a higher X-ray absorption coefficient than iodine , and could theoretically cause greater contrast enhancement in CT imaging .

从有效核电量方面来想一想为什么，这是因为，尽管，Z，原子序数依然在变大，但我们同时也在离原子核越来越远。

This is because even though z , the atomic number is still increasing , we are also getting further away from the nucleus .

锑（Sb）位于元素周期表第五周期第VA主族，原子序数为51，是一种天然存在的类金属元素。

Antimony ( Sb ) which belongs to the group VA in the periodic table is a naturally-occurring metalloid element .

利用带有针孔的透射式光栅光谱仪研究了激光等离子体X射线辐射的原子序数依赖性和激光功率密度对辐射的影响。

This paper presents the studies of the dependence of soft X-ray emission on atomic-number and laser intensities by using a new diagnostic tool , pinhole transmission grating spectrograph ( PTGS ) .

实验结果表明，在5-10MeV的能量范围内，大型集装箱检测系统利用双能X射线技术根据有效原子序数识别材料组是可行的。

Experimental result shows possibility of usage of LCIS op erating in dual energy mode in 5-10 MeV energy range for recognition of groups of materials according to their effective atomic number .

在器件的金属化层及封装等结构中，高原子序数材料在低能X射线的辐照下，会在相邻的低原子序数材料中产生剂量增强效应，从而使得器件性能严重退化。

High atomic number material of device can produce dose-enhancement effects to next low atomic number material in metallized layer and encapsulation structures irradiated with low-energy X ray . So device performance degenerates badly .

随着镧系原子序数的增加4f轨道对成键的贡献减少。

The contribution of 4f orbitals lessens with the increase of the atomic number of lanthanides .

电子射程随着原子序数的减少和入射束能量E0的增加而增加。

The electron range increases with decreasing atomic number and increasing incident beam energy E0 .

用超薄窗Si（Li）探测器测量低能X射线，将传统的PIXE谱测量范围推广到如Si、Al、Na等低原子序数元素。

An ultra-thin window Si ( Li ) detector used for measuring low energy X-rays is designed . The PIXE spectrum range has extended to still lower energies of characteristic X-rays originated from St , Al and Na .

居里温度随稀土金属原子序数的增加而增高，反映了稀土-铁原子间的间接交换作用的影响，Gd（15）B7Fe（78）具有最高的居里温度。

The curie temperature T_c is found to be increased with increasing atomic number of R , and T_c of Gd_ ( 15 ) B_7Fe_ ( 78 ) is the highest , which shows the effect of R-Fe exchange interaction .

综上，利用Micro-CT实验数据统计对比可以反映出鲤鱼耳石中原子序数大的重金属元素信息。

To sum up , information on heavy metals with high atomic number in the carp otolith can be reflected by statistical comparison of Micro-CT data .

关联了CeO2、Pr2O3与Nd2O3的稀土效应与其原子序数的关系，发现丙烯选择性随原子序数增加而提高。

The relation between the effect of adding rare earth oxides ( CeO_2 , Pr_2O_3 and Nd_2O_3 ) and their atomic number has been correlated . It was discovered that the selectivity of propene increases as the atomic number increases .

银（Ag）是一类重要的金属元素，原子序数为47，呈白色，具有金属光泽，在所有元素中具有最高的电导率，导热率也比任何其它金属都高。

Silver is metallic chemical element represented by Ag having atomic number 47 . It is white , lustrous transition metal , which has the highest electrical conductivity as compared to any element and the highest thermal conductivity as compared to any metal .

基于有机物系统命名法的原子序数（gi）及其染色序数（gi′）对分子中非氢原子具有优异的选择性，并能反映其所处的化学环境。

The atomic ordinal number g I and its colouring number g I ′ based on the systematic nomenclature of organic compound have excellent selectivity for non-hydrogen atom in organic molecules , and mirror its chemical surroundings .

由于ICF靶材料主要由轻元素组成，考虑到β射线与有效原子序数差别不大的轻元素材料相互作用时，其强度衰减系数的差别必然是很小的。

Because the target materials of ICF are mostly made up with light elements , and the difference of coefficient for intensity attenuation is very little when measuring different light elements having close atomic number using beta-ray .

本文通过与地质样品有效原子序数十分接近的SiO2和Al2O3分析纯样品的大量实验，大致计算出IED2000P手提式多元素X射线荧光仪的最佳散射角度为169°。

This paper roughly shows the calculated best scattering Angle of IED 2000P portable multi elements X ray fluorescence analyzer , by a lot of experiments of analysis pure samples SiO2 and Al2O3 whose effective atomic number is very close to geological samples . 4 .

它是在保证元素的原子序数顺序连续性之下，严格按元素的原子基态核外电子排布相同的列为一组，F族因其特性合为二个组。横行为周期，共八个周期。

Under guarantee the continuity of atomic number order , it has been done strictly according to the same electron configurations of the gaseous atoms of the elements arrange in a group , F group of elements is divided into two coloumn because of the analogy in properties and electronic .

结果显示：随着同一周期各合金元素原子序数的增加，合金化TiH2体系的体模量先增加后减小。

It follows that the bulk moduli of alloyed TiH 2 firstly increases and then decreases with the atomic number of the alloying elements in the same period .

还讨论了这些物理量随原子序数变化的定标律。

We also discussed the Z-scaling law of these physical quantities .

锝是不具有稳定同位素的所有元素中原子序数最低的一个。

Technetium is the lowest-numbered element that has no stable isotopes .

这些固溶体的晶胞参数随着原子序数的增加而减少，这种变化规律是由镧系收缩引起的。

This change is caused by the lanthanide contraction .

元素热容量与原子序数的定量关系

Quantitative Relation both Elemental Thermal Capacities and Atomic Number

一种元素的原子序数是其原子核中的质子数。

An element 's atomic number is the number of protons in its nucleus .

性质不发生根本的改变，原子序数的改变是不可能的。

No change in atomic number is possible without a radical change in properties .

晶体离子半径与原子序数的关系

Relationship of crystal ionic radii and atomic number