衰变链

相对论平均场理论对新核素~（259）Db及其α衰变链的研究

Description of the New Nuclide ~ ( 259 ) Db and Its α - Decay Chain in Relativistic Mean Field Theory

新核素~（265）Bh及其α衰变链上核的基态性质

Ground State Properties of the Newly Discovered Nucleus ~ ( 265 ) Bh and It 's Alpha Decay Chain

用二进制数对递次衰变链的衰变路径进行编码。

The decay pathways in successive decay chain were coded with binary digits .

AF&DCDLIB：活化产物、裂变产物和锕系元素衰变链数据库

A decay China data library for activation products , fission products and actinides

氡是天然放射性惰性气体，是铀系衰变链中的一个衰变产物。

As a product from the uranium disintegration , radon is a natural radioactive idle gas .

目的确定含天然放射性物质的物料是否处于非长期平衡，以及衰变链中那些长寿命核素被分离或减少。

Objective To determine materials containing natural radionuclides in or out secular equilibrium with their parents or daughters .

用宏观&微观模型研究超重核~（271）110及其衰变链的α衰变能和衰变寿命

Research on Decay Energies and Half-lives of Super-heavy Nuclei and the Nucleus of Its Disintegration Chain with a Macroscopic-microscopic Model

推广的液滴模型对超重核~（288）115及其α衰变链性质的研究

Properties of the Superheavy Nuclei ~ ( 288 ) 115 and Its α - Decay Chain in a Generalized Liquid-Drop Model

它产生于铀衰变链中的镭，而铀是所有岩石和土壤中都能找到的一种元素，含量各不相同。

It is produced from radium in the decay chain of uranium , an element found in varying amounts in all rocks and soil .

用自洽的相对论平均场模型研究了核271110及其α衰变链核的结构。

The structures of the nuclei on the alpha decay chain of 271 110 are investigated using self consistent relativistic mean field ( RMF ) model .

并详细讨论了γ射线强度精确测量时的影响因素：样品的自吸收、包壳厚度的变化，放射性衰变链、铀铝合金中铀含量的均匀性等。

This paper discusses factors which affect precise measurement 185.7 keV gamma rays intensity : self-absorption 、 cladding thickness 、 radioaction decay chains and uranium content uniformity in the U-AL alloy .

随着合成的超重元素向超重岛逼近，合成截面越来越小，同时，合成的超重元素的寿命可能相对增长，这对利用α衰变链的传统方法鉴别超重元素是非常不利的。

With the synthesis of heavy elements approaching the super heavy island , the production cross section becomes smaller and the lifetime of the super heavy element becomes longer , which results in the difficulties for identification of the elements by using conventional alpha decay chain technique .

应用图论原理，建立了一种基于数据库的多分支递次衰变计算方法，编制了计算机程序，用于计算复杂衰变链中各子体放射性强度随时间的变化。

Guided by the graph theory , an algorithm based on database technique was deve-loped for calculating the radioactivity of daughters of a decay chain and their variation vs time .