Use of Bayesian Optimization to understand the structure of nuclei
- NázevTitle
- Use of Bayesian Optimization to understand the structure of nucleiUse of Bayesian Optimization to understand the structure of nuclei
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- J. Hooker, J. Kovoor, K. L. Jones, R. Kanungo, S. Bhattacharjee
- Klíčová slovaKeywords
- Bayesian optimization, Geant4 simulation, Low-energy reactions, Stable ion beam, Radioactive ion beam, Transfer reaction, Direct reaction
- DOIDOI
- 10.1016/j.nimb.2021.11.014
- Časopis / citaceJournal / citation
- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 512, 6-11 (2022) · ISSN 0168-583X
- RokYear
- 2022
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.
- CitovánoCited by
- 4 (INSPIRE-HEP)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
Monte Carlo simulations are widely used in nuclear physics to model experimental systems. In cases where there are significant unknown quantities, such as energies of states, an iterative process of simulating and fitting is often required to describe experimental data. We describe a Bayesian approach to fitting experimental data, designed for data from a Be-12(d,p) reaction measurement, using simulations made with GEANT4. Q-values from the C-12(d,p) reaction to well-known states in C-13 are compared with simulations using BayesOpt. The energies of the states were not included in the simulation to reproduce the situation for Be-13 where the states are poorly known. Both cases had low statistics and significant resolution broadening owing to large proton energy losses in the solid deuterium target. Excitation energies of the lowest three excited states in C-13 were extracted to better than 90 keV, paving a way for extracting information on Be-13.
Monte Carlo simulations are widely used in nuclear physics to model experimental systems. In cases where there are significant unknown quantities, such as energies of states, an iterative process of simulating and fitting is often required to describe experimental data. We describe a Bayesian approach to fitting experimental data, designed for data from a Be-12(d,p) reaction measurement, using simulations made with GEANT4. Q-values from the C-12(d,p) reaction to well-known states in C-13 are compared with simulations using BayesOpt. The energies of the states were not included in the simulation to reproduce the situation for Be-13 where the states are poorly known. Both cases had low statistics and significant resolution broadening owing to large proton energy losses in the solid deuterium target. Excitation energies of the lowest three excited states in C-13 were extracted to better than 90 keV, paving a way for extracting information on Be-13.