Two-neutron capture reactions in supernovae neutrino bubbles

J. Görres, H. Herndl, I. J. Thompson, and M. Wiescher
Phys. Rev. C 52, 2231 – Published 1 October 1995
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Abstract

Recent calculations suggest that the neutrino heated bubbles in the postcollapse phase of type II supernovae may be the site of the r process. The nucleosynthesis process depends on the expansion and cooling rates as well as on the rates of the α-particle and neutron recombination processes that bridge the mass gaps at A = 5 and 8. We have reexamined the rate for the important reaction He4n)9Be, and estimated the rates for the two neutron capture reactions on He6 and He8 which could provide an alternative reaction path. We find that the most important reaction for initiating the α process is the He4n)9Be reaction, as suggested by earlier work.

  • Received 20 March 1995

DOI:https://doi.org/10.1103/PhysRevC.52.2231

©1995 American Physical Society

Authors & Affiliations

J. Görres, H. Herndl, I. J. Thompson, and M. Wiescher

  • Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556

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Issue

Vol. 52, Iss. 4 — October 1995

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