We study the sensitivity of the r-process abundance pattern to neutron capture rates along the rare earth region (A∼150 to A∼180). 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.
Physical Review C
- Pub Date:
- September 2012
- Nuclear physics aspects of novae supernovae and other explosive environments;
- Nuclear Theory;
- Astrophysics - Solar and Stellar Astrophysics
- 14 pages, 7 figures, submitted to PRC