Effects of collision cascade density on radiation defect dynamics in 3C-SiC

Bayu Aji, L. B.; Wallace, J. B.; Kucheyev, S. O.

doi:10.1038/srep44703

Title: Effects of collision cascade density on radiation defect dynamics in 3C-SiC

Journal Article · Fri Mar 17 00:00:00 EDT 2017 · Scientific Reports

DOI:https://doi.org/10.1038/srep44703· OSTI ID:1366962

Bayu Aji, L. B. ^[1]; Wallace, J. B. ^[2]; Kucheyev, S. O. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering

Effects of the collision cascade density on radiation damage in SiC remain poorly understood. We study damage buildup and defect interaction dynamics in 3C-SiC bombarded at 100 °C with either continuous or pulsed beams of 500 keV Ne, Ar, Kr, or Xe ions. Here, we find that bombardment with heavier ions, which create denser collision cascades, results in a decrease in the dynamic annealing efficiency and an increase in both the amorphization cross-section constant and the time constant of dynamic annealing. The cascade density behavior of these parameters is non-linear and appears to be uncorrelated. Our results demonstrate clearly (and quantitatively) an important role of the collision cascade density in dynamic radiation defect processes in 3C-SiC.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1366962

Report Number(s):: LLNL-JRNL-702569

Journal Information:: Scientific Reports, Vol. 7; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 21 works

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Comparative study of radiation defect dynamics in 3C-SiC by X-ray diffraction, Raman scattering, and ion channeling Bayu Aji, L. B.; Stavrou, E.; Wallace, J. B. Applied Physics A, Vol. 125, Issue 1 https://doi.org/10.1007/s00339-018-2325-7	journal	December 2018
Impact of pre-existing disorder on radiation defect dynamics in Si Wallace, J. B.; Bayu Aji, L. B.; Shao, L. Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-48415-7	journal	August 2019
Radiation defect dynamics in GaAs studied by pulsed ion beams Bayu Aji, L. B.; Wallace, J. B.; Kucheyev, S. O. Journal of Applied Physics, Vol. 124, Issue 2 https://doi.org/10.1063/1.5038018	journal	July 2018
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Radiation defect dynamics in SiC with pre-existing defects Bayu Aji, L. B.; Wallace, J. B.; Kucheyev, S. O. Journal of Applied Physics, Vol. 125, Issue 23 https://doi.org/10.1063/1.5093640	journal	June 2019
Fractal analysis of collision cascades in pulsed-ion-beam-irradiated solids Wallace, J. B.; Aji, L. B. Bayu; Shao, L. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-17781-5	journal	December 2017

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