Núcleos exóticos e síntese dos elementos químicos

Química Nova

Nilton Teruya²  Sérgio Barbosa Duarte¹ 

[1] ,Universidade Federal da Paraíba Departamento de Física João Pessoa PB ,Brasil

关键词: chemical element;    exotic nuclei;    nucleosynthesis;   

DOI  :  10.1590/S0100-40422012000200024

来源: SciELO

【 摘 要 】

We have around ninety chemical elements available in nature, which were produced mainly by nuclear reactions inside stars. The fusion reactions are the main synthesis process which generates the light and intermediate masses elements. The synthesis begins with the hydrogen burning reaching the region of iron mass nuclei. Heavier elements are synthesized by neutron capture processes, forming exotic nuclei with large neutron excess. These systems present characteristics very different from nuclei inside of stable atoms; they only occur in particular astrophysical environments or are produced artificially in special laboratory conditions. This work discusses some properties of the exotic nuclei and how they participate in the synthesis of elements.

【 授权许可】

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