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The role of fission in the r-process
Progress in Particle and Nuclear Physics, 2007We have developed a full set of fission rates that include spontaneous fission, neutron-induced fission, beta-delayed fission and, neutrino-induced fission, that are supplemented with realistic distributions of fission yields. Using this new input data we have carried out r-process calculations assuming adiabatic expansions that mimic the conditions ...
Martínez-Pinedo, G. +9 more
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The Site for R-Process Nucleosynthesis
Astrophysics and Space Science, 2002Following our hypothesis that each supernova (SN) event triggers star formation in the swept-up gas, so that newly formed stars inherit the elemental abundance pattern of individual SNe, we deduce the production sites and yields for r-process elements. We further show that a strong evidence for the origin of r-process nucleosynthesis products was just ...
Takuji Tsujimoto +2 more
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The R-process and nucleochronology
Physics Reports, 1991Abstract The r-process of nucleosynthesis is the process which is responsible for the synthesis of approximately half of the nuclear species in nature that are more massive than iron. This process of heavy-element synthesis involves the progressive buildup of heavier isotopes via neut ron captures proceeding on neutron-rich isotopes, interspersed by ...
John J. Cowan +2 more
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Nuclear Physics A, 1997
Abstract We survey the r-process of nucleosynthesis in matter flowing out radially from a nascent neutron star. We parameterize the expansion of the matter according to the entropy per baryon, the initial electron-to-baryon ratio, and the expansion timescale. We present here constraints on r-process conditions based on successful synthesis of the A
B.S. Meyer, J.S. Brown
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Abstract We survey the r-process of nucleosynthesis in matter flowing out radially from a nascent neutron star. We parameterize the expansion of the matter according to the entropy per baryon, the initial electron-to-baryon ratio, and the expansion timescale. We present here constraints on r-process conditions based on successful synthesis of the A
B.S. Meyer, J.S. Brown
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