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Title: Physical conditions for the r-process

Abstract

Recent works show that the r-process can proceed by competition between neutron capture and {beta}-decay in low temperature environments (< 5 Multiplication-Sign 10{sup 8} K; cold r-process) where photo-disintegration plays no role. This is in contrast to the traditional picture of the r-process in high temperature environments ({approx} 1 Multiplication-Sign 10{sup 9} K; hot r-process) where the (n, {gamma})-({gamma}, n) equilibrium holds. In this study, we explore nucleosynthesis calculations based on a site-independent model to elucidate the physical conditions leading to cold and hot r-processes.

Authors:
; ;  [1];  [2];  [3]
  1. Technische Universitaet Muenchen, Excellence Cluster Universe, Boltzmannstr. 2, D-85748 Garching and Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching (Germany)
  2. (Japan)
  3. (Belgium)
Publication Date:
OSTI Identifier:
22075748
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1484; Journal Issue: 1; Conference: Conference on origin of matter and evolution of galaxies 2011, Wako (Japan), 14-17 Nov 2011; Other Information: (c) 2012 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; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; BETA DECAY; CAPTURE; EQUILIBRIUM; GAMMA RADIATION; NEUTRON REACTIONS; NUCLEOSYNTHESIS; PHOTONUCLEAR REACTIONS; R PROCESS

Citation Formats

Wanajo, S., Tachibana, T., Goriely, S., Senior High School of Waseda University, Nerima, Tokyo 177-0044, and Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, C.P. 226, B-1050 Brussels. Physical conditions for the r-process. United States: N. p., 2012. Web. doi:10.1063/1.4763398.
Wanajo, S., Tachibana, T., Goriely, S., Senior High School of Waseda University, Nerima, Tokyo 177-0044, & Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, C.P. 226, B-1050 Brussels. Physical conditions for the r-process. United States. doi:10.1063/1.4763398.
Wanajo, S., Tachibana, T., Goriely, S., Senior High School of Waseda University, Nerima, Tokyo 177-0044, and Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, C.P. 226, B-1050 Brussels. Mon . "Physical conditions for the r-process". United States. doi:10.1063/1.4763398.
@article{osti_22075748,
title = {Physical conditions for the r-process},
author = {Wanajo, S. and Tachibana, T. and Goriely, S. and Senior High School of Waseda University, Nerima, Tokyo 177-0044 and Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, C.P. 226, B-1050 Brussels},
abstractNote = {Recent works show that the r-process can proceed by competition between neutron capture and {beta}-decay in low temperature environments (< 5 Multiplication-Sign 10{sup 8} K; cold r-process) where photo-disintegration plays no role. This is in contrast to the traditional picture of the r-process in high temperature environments ({approx} 1 Multiplication-Sign 10{sup 9} K; hot r-process) where the (n, {gamma})-({gamma}, n) equilibrium holds. In this study, we explore nucleosynthesis calculations based on a site-independent model to elucidate the physical conditions leading to cold and hot r-processes.},
doi = {10.1063/1.4763398},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1484,
place = {United States},
year = {2012},
month = {11}
}