Impact of individual nuclear masses on <math><mi>r</mi></math>-process abundances [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2015. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- Article numbers 035,807 : digital, PDF file
- Additional Creators:
- Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- We have performed for the first time a comprehensive study of the sensitivity of r-process nucleosynthesis to individual nuclear masses across the chart of nuclides. Using the latest version (2012) of the Finite-Range Droplet Model, we consider mass variations of ±0.5 MeV and propagate each mass change to all affected quantities, including Q values, reaction rates, and branching ratios. We find such mass variations can result in up to an order of magnitude local change in the final abundance pattern produced in an r-process simulation. As a result, we identify key nuclei whose masses have a substantial impact on abundance predictions for hot, cold, and neutron star merger r-process scenarios and could be measured at future radioactive beam facilities.
- Published through SciTech Connect., 09/15/2015., "la--ur-15-24098", Physical Review. C, Nuclear Physics 92 3 ISSN 0556-2813; PRVCAN AM, and Mumpower, M.; Surman, R.; Fang, D.; Beard, M.; Möller, P.; Kawano, T.; Aprahamian, A.
- Funding Information:
- PHY0822648, PHY1419765, SC0013039, and AC52-06NA25396
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