Uncertainty-quantified reaction modeling via data-driven multi-objective optimization.
ORAL · Invited
Abstract
nuclear reaction parameters in the Hauser-Feshbach framework by simultaneously accounting for a precise theoretical description of
all available experimental data across multiple reaction channels in a given region of the nuclear chart. From this analysis, we capture parameter correlations and estimate
data-driven uncertainties for theoretical parameters of optical potentials and of level densities. We extract uncertainty-quantified resonance spacing values for all nuclei in the optimization network and thus propose estimated values for both stable and unstable isotopes. In this talk, we present the implementation of our approach in the Ni-Ge region and preliminary results of the same analysis for nuclei around 96Zr.
*This material is based upon work supported by the U.S. Department of Energy, Office ofScience, Nuclear Physics program under Award Numbers DE-SC-0022538, DE-NA0004073, DE-FG02-88ER40387,and Central Michigan University College of Science and Engineering.It benefits from the LANSCE accelerator facility and is supported by the U.S. Department of Energy under contract No. 89233218CNA000001 and by theUS Nuclear Data Program (USNDP) under the Office of Science of the U.S. Department of Energy.
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Publication: New approach for the quantification of uncertainties in reaction modeling via data-driven multi-objective optimization.
N. Dimitrakopoulos, G. Perdikakis, F. Montes, P. Gastis,
S. A. Kuvin, H. Y. Lee, P. Tsintari, and A. V. Voinov, submitted to Physical Review Letters
Presenters
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Georgios Perdikakis
- Central Michigan University