R-process nucleosynthesis in the high-entropy supernova bubble

Details R-process nucleosynthesis in the high-entropy supernova bubble R-process nucleosynthesis in the high-entropy supernova bubble

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...399..656m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 399, no. 2, p. 656-664.

Astronomy and Astrophysics

Astrophysics

185

Entropy, Neutron Stars, Nuclear Fusion, Plasma Bubbles, Supernovae, Abundance, Hot Stars, Neutrinos, Stellar Temperature

Scientific paper

We show that the high-temperature, high-entropy evacuated region outside the recent neutron star in a core-collapse supernova may be an ideal r-process site. In this high-entropy environment it is possible that most nucleons are in the form of free neutrons or bound into alpha particles. Thus, there can be many neutrons per seed nucleus even though the material is not particularly neutron rich. The predicted amount of r-process material ejected per event from this environment agrees well with that required by simple galactic evolution arguments. When averaged over regions of different neutron excess in the supernova ejecta, the calculated r-process abundance curve can give a good representation of the solar-system r-process abundances as long as the entropy per baryon is sufficiently high. Neutrino irradiation may aid in smoothing the final abundance distribution.

Affiliated with

Also associated with

No associations

Rating

R-process nucleosynthesis in the high-entropy supernova bubble does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with R-process nucleosynthesis in the high-entropy supernova bubble, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and R-process nucleosynthesis in the high-entropy supernova bubble will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1551755