Uncertainty-quantified reaction modeling via data-driven multi-objective optimization.

ORAL  · Invited

Abstract

We have recently introduced a new multi-objective optimization approach that allows us to determine uncertainty-quantified

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.

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

  • Georgios Perdikakis

    • Central Michigan University

Authors

  • Georgios Perdikakis

    • Central Michigan University
  • Nikolaos Dimitrakopoulos

    • Central Michigan University
  • Fernando Montes

    • Facility for Rare Isotope Beams
  • Panagiotis Gastis

    • Los Alamos National Laboratory (LANL)
  • Sean A Kuvin

    • Los Alamos National Laboratory (LANL)
  • Hye Young Lee

    • Los Alamos National Laboratory (LANL)
  • Pelagia Tsintari

    • Facility for Rare Isotope Beams / Michigan State University
  • Alexander Voinov

    • Ohio University