Neutrino-induced Fission and [ITAL][CLC]r[/CLC][/ITAL]-Process Nucleosynthesis

2002/03/13 by Y. -Z. Qian, Y.-Z. Qian · 2 citations
Physics and Astronomy · #Gamma-ray bursts and supernovae #Neutrino Physics Research #Nuclear physics research studies #astro-ph #nucl-th

paper · pdf · doi:10.1086/340643

published as Astrophys.J. 569 (2002) L103-L106 · 11 pages, 2 figures, to appear in ApJL

arxiv created 2002/03/13 · openalex publication_date 2002/04/20 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/31

Abstract

An r -process scenario with fission but without 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.

Citations

• Measurement of stellar age from uranium decay
• Fission barriers of neutron-rich and superheavy nuclei calculated with the ETFSI method

Cited by

• Neutrino-Induced Fission of Neutron-Rich Nuclei
• Cross sections and fragment distributions from neutrino-induced fission on r-process nuclei