Influence of neutron capture rates in the rare earth region on the r-process abundance pattern

Matthew R. Mumpower, Gail C. McLaughlin, and Rebecca Surman
Phys. Rev. C 86, 035803 – Published 17 September 2012

Abstract

We study the sensitivity of the r-process abundance pattern to neutron capture rates along the rare earth region (A150 to A180). We introduce the concepts of large nuclear flow and flow saturation, which determine the neutron capture rates that are influential in setting the rare earth abundances. We illustrate the value of the two concepts by considering high entropy conditions favorable for rare earth peak production and identifying important neutron capture rates among the rare earth isotopes. We also show how these rates influence nuclear flow and specific sections of the abundance pattern.

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  • Received 2 April 2012

DOI:https://doi.org/10.1103/PhysRevC.86.035803

©2012 American Physical Society

Authors & Affiliations

Matthew R. Mumpower* and Gail C. McLaughlin

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202, USA

Rebecca Surman

  • Department of Physics and Astronomy, Union College, Schenectady, New York 12308, USA

  • *mrmumpow@ncsu.edu
  • gail_mclaughlin@ncsu.edu
  • surmanr@union.edu

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Issue

Vol. 86, Iss. 3 — September 2012

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