The Impact of Nuclear Physics During Stellar Core Collapse
Abstract
Nuclear electron capture and the nuclear equation of state play important roles during the collapse of a massive star and the subsequent supernova. The nuclear equation of state controls the nature of the bounce which initially forms the supernova shock while electron capture determines the location where the shock forms. Advances in nuclear structure theory have allowed a more realistic treatment of electron capture on heavy nuclei to be developed. We will review how this improvement has led to a change in our understanding of stellar core collapse, with electron capture on nuclei with masses larger than 50 found to dominate electron capture on free protons, resulting is significant changes in the hydrodynamics of core collapse and bounce. We will also demonstrate the impact of a variety of nuclear equations of state on supernova shock propagation. Of particular note is the interplay between the nuclear composition determined by the equation of state and nuclear electron capture.
- Authors:
-
- ORNL
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 958939
- DOE Contract Number:
- DE-AC05-00OR22725
- Resource Type:
- Conference
- Resource Relation:
- Conference: Nuclei in the Cosmos X, Mackinac Island, MI, USA, 20080727, 20080801
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON CAPTURE; EQUATIONS OF STATE; HEAVY NUCLEI; HYDRODYNAMICS; NUCLEAR PHYSICS; NUCLEAR STRUCTURE; NUCLEI; PROTONS; STARS; UNIVERSE
Citation Formats
Hix, William Raphael, Baird, Mark L, Lentz, Eric J, Messer, Bronson, and Mezzacappa, Anthony. The Impact of Nuclear Physics During Stellar Core Collapse. United States: N. p., 2008.
Web.
Hix, William Raphael, Baird, Mark L, Lentz, Eric J, Messer, Bronson, & Mezzacappa, Anthony. The Impact of Nuclear Physics During Stellar Core Collapse. United States.
Hix, William Raphael, Baird, Mark L, Lentz, Eric J, Messer, Bronson, and Mezzacappa, Anthony. 2008.
"The Impact of Nuclear Physics During Stellar Core Collapse". United States.
@article{osti_958939,
title = {The Impact of Nuclear Physics During Stellar Core Collapse},
author = {Hix, William Raphael and Baird, Mark L and Lentz, Eric J and Messer, Bronson and Mezzacappa, Anthony},
abstractNote = {Nuclear electron capture and the nuclear equation of state play important roles during the collapse of a massive star and the subsequent supernova. The nuclear equation of state controls the nature of the bounce which initially forms the supernova shock while electron capture determines the location where the shock forms. Advances in nuclear structure theory have allowed a more realistic treatment of electron capture on heavy nuclei to be developed. We will review how this improvement has led to a change in our understanding of stellar core collapse, with electron capture on nuclei with masses larger than 50 found to dominate electron capture on free protons, resulting is significant changes in the hydrodynamics of core collapse and bounce. We will also demonstrate the impact of a variety of nuclear equations of state on supernova shock propagation. Of particular note is the interplay between the nuclear composition determined by the equation of state and nuclear electron capture.},
doi = {},
url = {https://www.osti.gov/biblio/958939},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2008},
month = {Tue Jan 01 00:00:00 EST 2008}
}