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

Abstract

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.

Authors:
 [1];  [2];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1366962
Report Number(s):
LLNL-JRNL-702569
Journal ID: ISSN 2045-2322
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; condensed-matter physics; materials science

Citation Formats

Bayu Aji, L. B., Wallace, J. B., and Kucheyev, S. O. Effects of collision cascade density on radiation defect dynamics in 3C-SiC. United States: N. p., 2017. Web. doi:10.1038/srep44703.
Bayu Aji, L. B., Wallace, J. B., & Kucheyev, S. O. Effects of collision cascade density on radiation defect dynamics in 3C-SiC. United States. doi:10.1038/srep44703.
Bayu Aji, L. B., Wallace, J. B., and Kucheyev, S. O. Fri . "Effects of collision cascade density on radiation defect dynamics in 3C-SiC". United States. doi:10.1038/srep44703. https://www.osti.gov/servlets/purl/1366962.
@article{osti_1366962,
title = {Effects of collision cascade density on radiation defect dynamics in 3C-SiC},
author = {Bayu Aji, L. B. and Wallace, J. B. and Kucheyev, S. O.},
abstractNote = {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.},
doi = {10.1038/srep44703},
journal = {Scientific Reports},
number = ,
volume = 7,
place = {United States},
year = {2017},
month = {3}
}

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