Primary defect production by high energy displacement cascades in molybdenum

Aaron P. Selby; Donghua Xu; Niklas Juslin; Nathan A. Capps; Brian D. Wirth

doi:10.1016/j.jnucmat.2013.01.332

Primary defect production by high energy displacement cascades in molybdenum

Aaron P. Selby, Donghua Xu, Niklas Juslin, Nathan A. Capps, Brian D. Wirth

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

We report molecular dynamics simulations of primary damage in molybdenum produced by high energy displacement cascades on the femto- to pico-second and Angstrom to nanometer scales. Clustering directly occurred for both interstitials and vacancies in the 1-50 keV cascade energy range explored. Point defect survival efficiency and partitioning probabilities into different sized clusters were quantified. The results will provide an important reference for kinetic models to describe the microstructural evolution in Mo under ion or neutron irradiations over much longer time and length scales.

Original language	English
Pages (from-to)	19-23
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	437
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.332
State	Published - 2013
Externally published	Yes

Funding

We acknowledge support by the U.S. Department of Energy, Office of Fusion Energy Sciences under Grant DOE-DE-SC0006661 and the U.S. Department of Energy, Office of Nuclear Energy’s Nuclear Energy University Programs (NEUP).

Funders	Funder number
Nuclear Energy University Programs
U.S. Department of Energy
Office of Nuclear Energy
Fusion Energy Sciences	DOE-DE-SC0006661

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abstract = "We report molecular dynamics simulations of primary damage in molybdenum produced by high energy displacement cascades on the femto- to pico-second and Angstrom to nanometer scales. Clustering directly occurred for both interstitials and vacancies in the 1-50 keV cascade energy range explored. Point defect survival efficiency and partitioning probabilities into different sized clusters were quantified. The results will provide an important reference for kinetic models to describe the microstructural evolution in Mo under ion or neutron irradiations over much longer time and length scales.",

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AU - Xu, Donghua

AU - Juslin, Niklas

AU - Capps, Nathan A.

AU - Wirth, Brian D.

PY - 2013

Y1 - 2013

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AB - We report molecular dynamics simulations of primary damage in molybdenum produced by high energy displacement cascades on the femto- to pico-second and Angstrom to nanometer scales. Clustering directly occurred for both interstitials and vacancies in the 1-50 keV cascade energy range explored. Point defect survival efficiency and partitioning probabilities into different sized clusters were quantified. The results will provide an important reference for kinetic models to describe the microstructural evolution in Mo under ion or neutron irradiations over much longer time and length scales.

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ER -

Primary defect production by high energy displacement cascades in molybdenum

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