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Title: Stellar Neutron Capture on Neon Isotopes

Abstract

The stellar (n,{gamma}) cross sections of the Ne isotopes are important for a number of astrophysical quests, i.e., for the interpretation of abundance patterns in presolar material or with respect to the s-process neutron balance in red giant stars. This paper presents resonance studies of experimental data in the keV range, which had not been fully analyzed before. The analyses were carried out with the R-matrix code SAMMY including the consistent treatment of possible interferences in the resonant part. With these results the resonant part of the neon cross sections could be determined. If the component due to direct radiative capture is normalized at thermal neutron energies, one finds that the stellar rates had been grossly overestimated.

Authors:
; ; ;  [1];  [2];  [3]
  1. Forschungszentrum Karlsruhe, Institut fuer Kernphysik, Postfach 3640, D-76021 Karlsruhe (Germany)
  2. Istituto di Fisica Generale, Universita di Torino, Via P. Giuria 1, I-10125 Turin (Italy)
  3. CERN, CH-1211 Geneva 23 (Switzerland)
Publication Date:
OSTI Identifier:
20722433
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 769; Journal Issue: 1; Conference: International conference on nuclear data for science and technology, Santa Fe, NM (United States), 26 Sep - 1 Oct 2004; Other Information: DOI: 10.1063/1.1945257; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CAPTURE; CROSS SECTIONS; ELEMENT ABUNDANCE; INTERFERENCE; KEV RANGE; NEON ISOTOPES; NEUTRON REACTIONS; R MATRIX; RED GIANT STARS; RESONANCE; S CODES; S PROCESS; THERMAL NEUTRONS

Citation Formats

Heil, M, Plag, R, Juseviciute, A, Kaeppeler, F, Gallino, R, Sezione INFN di Torino, Via P. Giuria 1, I-10125 Turin, and Mengoni, A. Stellar Neutron Capture on Neon Isotopes. United States: N. p., 2005. Web. doi:10.1063/1.1945257.
Heil, M, Plag, R, Juseviciute, A, Kaeppeler, F, Gallino, R, Sezione INFN di Torino, Via P. Giuria 1, I-10125 Turin, & Mengoni, A. Stellar Neutron Capture on Neon Isotopes. United States. https://doi.org/10.1063/1.1945257
Heil, M, Plag, R, Juseviciute, A, Kaeppeler, F, Gallino, R, Sezione INFN di Torino, Via P. Giuria 1, I-10125 Turin, and Mengoni, A. 2005. "Stellar Neutron Capture on Neon Isotopes". United States. https://doi.org/10.1063/1.1945257.
@article{osti_20722433,
title = {Stellar Neutron Capture on Neon Isotopes},
author = {Heil, M and Plag, R and Juseviciute, A and Kaeppeler, F and Gallino, R and Sezione INFN di Torino, Via P. Giuria 1, I-10125 Turin and Mengoni, A},
abstractNote = {The stellar (n,{gamma}) cross sections of the Ne isotopes are important for a number of astrophysical quests, i.e., for the interpretation of abundance patterns in presolar material or with respect to the s-process neutron balance in red giant stars. This paper presents resonance studies of experimental data in the keV range, which had not been fully analyzed before. The analyses were carried out with the R-matrix code SAMMY including the consistent treatment of possible interferences in the resonant part. With these results the resonant part of the neon cross sections could be determined. If the component due to direct radiative capture is normalized at thermal neutron energies, one finds that the stellar rates had been grossly overestimated.},
doi = {10.1063/1.1945257},
url = {https://www.osti.gov/biblio/20722433}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 769,
place = {United States},
year = {Tue May 24 00:00:00 EDT 2005},
month = {Tue May 24 00:00:00 EDT 2005}
}