Generalized framework for interatomic potential design: Application to Fe-He system

M. A. Tschopp, Kiran Solanki, M. I. Baskes, F. Gao, X. Sun, M. F. Horstemeyer

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Radiation damage phenomena plays an important role in the lifetime of structural materials for future fusion power reactors. Developing predictive multiscale models for material behavior under irradiation conditions in a fusion reactor requires understanding the mechanisms associated with radiation damage phenomena, the He interaction with microstructures, and quantifying the associated uncertainties. Nanoscale simulations and interatomic potentials play an important role in exploring the physics of nanoscale structures. However, while interatomic potentials are designed for a specific purpose, they are often used for studying mechanisms outside of the intended purpose. Hence, a generalized framework for interatomic potential design is designed such that it can allow a researcher to tailor an interatomic potential towards specific properties. This methodology produces an interatomic potential design map, which contains multiple interatomic potentials and is capable of exploring different nanoscale phenomena observed in experiments. This methodology is efficient and provides the means to assess uncertainties in nanostructure properties due to the interatomic potential fitting process. As an initial example with relevance to fusion reactors, an Fe-He interatomic potential design map is developed using this framework to show its profound effect.

Original languageEnglish (US)
Pages (from-to)22-32
Number of pages11
JournalJournal of Nuclear Materials
Volume425
Issue number1-3
DOIs
StatePublished - Jun 2012

Fingerprint

Fusion reactors
Radiation damage
fusion reactors
Nanostructures
Fusion reactions
Physics
radiation damage
Irradiation
Microstructure
methodology
multiscale models
power reactors
Experiments
Uncertainty
fusion
life (durability)
microstructure
physics
irradiation
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Generalized framework for interatomic potential design : Application to Fe-He system. / Tschopp, M. A.; Solanki, Kiran; Baskes, M. I.; Gao, F.; Sun, X.; Horstemeyer, M. F.

In: Journal of Nuclear Materials, Vol. 425, No. 1-3, 06.2012, p. 22-32.

Research output: Contribution to journalArticle

Tschopp, M. A. ; Solanki, Kiran ; Baskes, M. I. ; Gao, F. ; Sun, X. ; Horstemeyer, M. F. / Generalized framework for interatomic potential design : Application to Fe-He system. In: Journal of Nuclear Materials. 2012 ; Vol. 425, No. 1-3. pp. 22-32.
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