r-process

By calculating the metal-poor stars to study two composition of r-process .

通过计算结果来研究r-过程的两个组成。

A Parametric Approach to Mental-poor S - , R-process Both Enhanced Stars

贫金属s-、r-过程双增丰星参数化研究

Sites for r-process Nucleosynthesis and Scatter of Abundance for Heavy Elements

r-过程核合成的场所和重元素丰度的离散

The Heavy R-process Elements Yields and Abundances Scatter in the Halo of Galaxy

星系晕较重r-过程元素产量和丰度的离散

Therefore , the work for the r-process of this article , as well as for the nucleosynthesis of the studies have very important significance .

因此本文的工作对于r-过程，以及核合成的研究都具有非常重要的意义。

A brief account of the process of galaxy chemical elements nucleosynthesis is presented , including nuclear ignite process , s-process , r-process .

简述了恒星化学元素的核合成过程，包括一系列核燃烧过程，r-过程，s-过程。

We investigate the solutions of differential equation arising in the R-process of supernova expansion , show the well-posedness of solution in general conditions .

研究了超新星爆发的R-过程出现的微分方程，证明了在一般情况下的解的适定性，并对两类特殊情况的求解作了进一步的研究。

The dissertation consists of two sections . The first one mainly introduce the chemical evolution model and observational constrain , and the second mainly introduce the nucleosynthesis of r-process and the chemical evolution of Ba peak elements .

本文分二部分，第一部分重点介绍星系的化学演化模型和观测约束，第二部分重点介绍r-process核合成和Ba峰元素r-process的星系化学演化。

Predict from a theoretical point to view for the element abundances , and explore the distribution of element abundances characteristics and laws , so as to further discuss the r-process nucleosynthesis process and the possible site .

用以从理论角度预言元素丰度，探索元素丰度分布的特征和规律，从而进一步讨论r-过程核合成的分量过程及可能的场所。

In recent years , study of the r-process nuclear synthesis on metal-poor stars are more and more . However , there does not have a mature theory so far , and there are also lot of controversy on place of their formation .

近年来对贫金属星r-过程的研究越来越多。但是，到目前为止还没有一种成熟的理论，对其形成场所也存在许多争议。

In recent years , discovery of s-process nucleosynthesis theory of AGB stars has already made more progress than that of r-process . At present , researching the astrophysical site and physical conditions about r-process nucleosynthesis of metal-poor stars is still important topics .

近年来，AGB星s-过程和r-过程核合成理论的研究已经取得了多方面的进展，相对而言贫金属星r-过程核合成场所及相关物理条件仍然是当前核天体物理学研究领域的重要前沿课题。

The result shows that the rapid neutron capture process ( r-process ) is the main source of neutron capture elements in poor-metal stars . Besides , the yields of heavy neutron capture elements in stars whose metallicity is less than - 2.5 may come from pure r-process .

结果显示，快中子俘获过程（r过程）是贫金属星中子俘获元素的主要来源，且金属丰度小于-2.5的贫金属星的重中子俘获元素产量可能来自于纯r过程；