Neutrino-Induced Fission and r-Process Nucleosynthesis

Дата и время публикации : 2002-03-13T01:17:43Z

Авторы публикации и институты :
Y. -Z. Qian (UMN)

Оригинал статьи :http://arxiv.org/abs/astro-ph/0203194v1

Скачать pdf : http://arxiv.org/pdf/astro-ph/0203194v1

Ссылка на журнал-издание: Astrophys.J. 569 (2002) L103-L106
Коментарии к статье: 11 pages, 2 figures, to appear in ApJL
Первичная категория: astro-ph

Все категории : astro-ph, nucl-th

Краткий обзор статьи: An r-process scenario with fission but no fission cycling is considered to account for the observed abundance patterns of neutron-capture elements in ultra-metal-poor stars. It is proposed that neutrino reactions play a crucial role in inducing the fission of the progenitor nuclei after the r-process freezes out in Type II Supernovae. To facilitate neutrino-induced fission, the proposed r-process scenario is restricted to occur in a low-density environment such as the neutrino-driven wind from the neutron star. Further studies to develop this scenario are emphasized.

Category: Physics