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Influence of light nuclei on neutrino-driven supernova outflows

Arcones, A. and Martínez-Pinedo, G. and O'Connor, E. and Schwenk, A. and Janka, H.-Th. and Horowitz, C. J. and Langanke, K. (2008) Influence of light nuclei on neutrino-driven supernova outflows. Physical Review C, 78 (1). Art. No. 015806. ISSN 0556-2813. https://resolver.caltech.edu/CaltechAUTHORS:ARCprc08

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Abstract

We study the composition of the outer layers of a protoneutron star and show that light nuclei are present in substantial amounts. The composition is dominated by nucleons, deuterons, tritons and alpha particles; 3He is present in smaller amounts. This composition can be studied in laboratory experiments with new neutron-rich radioactive beams that can reproduce similar densities and temperatures. After including the corresponding neutrino interactions, we demonstrate that light nuclei have a small impact on the average energy of the emitted electron neutrinos, but are significant for the average energy of antineutrinos. During the early post-explosion phase, the average energy of electron antineutrinos is slightly increased, while at later times during the protoneutron star cooling it is reduced by about 1 MeV. The consequences of these changes for nucleosynthesis in neutrino-driven supernova outflows are discussed.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevC.78.015806DOIUNSPECIFIED
http://link.aps.org/abstract/PRC/v78/e015806PublisherUNSPECIFIED
ORCID:
AuthorORCID
O'Connor, E.0000-0002-8228-796X
Additional Information:©2008 The American Physical Society. (Received 24 May 2008; published 24 July 2008) A.A. acknowledges support by the Deutsche Forschungsgemeinschaft through contract SFB 634 “Nuclear structure, nuclear astrophysics and fundamental experiments at small momentum transfers at the S-DALINAC”. The work of E.O. and A.S. is supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). TRIUMF receives federal funding via a contribution agreement through the National Research Council of Canada. The work of H.-T.J. is supported by the Deutsche Forschungsgemeinschaft through the Transregional Collaborative Research Centers SFB/TR 27 “Neutrinos and Beyond” and SFB/TR 7 “Gravitational Wave Astronomy”, and the Cluster of Excellence EXC 153 “Origin and Structure of the Universe” (http://www.universecluster.de). The work of C.J.H. is supported in part by DOE grant DE-FG02-87ER40365.
Funders:
Funding AgencyGrant Number
Deutsche ForschungsgemeinschaftSFB 634 “Nuclear structure, nuclear astrophysics and fundamental experiments at small momentum transfers at the S-DALINAC”
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
National Research Council of CanadaUNSPECIFIED
Deutsche ForschungsgemeinschaftTransregional Collaborative Research Centers SFB/TR 27 “Neutrinos and Beyond”
Deutsche ForschungsgemeinschaftSFB/TR 7 “Gravitational Wave Astronomy”
Deutsche ForschungsgemeinschaftCluster of Excellence EXC 153 “Origin and Structure of the Universe”
Department of EnergyDE-FG02-87ER40365
Issue or Number:1
Record Number:CaltechAUTHORS:ARCprc08
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:ARCprc08
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:11233
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:26 Jul 2008 03:03
Last Modified:09 Mar 2020 13:19

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