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Title: Radiation damage buildup by athermal defect reactions in nickel and concentrated nickel alloys

We develop a new method using binary collision approximation simulating the Rutherford backscattering spectrometry in channeling conditions (RBS/C) from molecular dynamics atom coordinates of irradiated cells. The approach allows comparing experimental and simulated RBS/C signals as a function of depth without fitting parameters. The simulated RBS/C spectra of irradiated Ni and concentrated solid solution alloys (CSAs, NiFe and NiCoCr) show a good agreement with the experimental results. The good agreement indicates the damage evolution under damage overlap conditions in Ni and CSAs at room temperature is dominated by defect recombination and migration induced by irradiation rather than activated thermally.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ; ORCiD logo [4] ;  [5]
  1. Lanzhou University (China). School of Nuclear Science and Technology; Univ. of Helsinki (Finland). Department of Physics and Helsinki Institute of Physics
  2. Univ. of Helsinki (Finland). Department of Physics and Helsinki Institute of Physics; National Research Nuclear University MEPhI, Moscow (Russia)
  3. Univ. of Helsinki (Finland). Department of Physics and Helsinki Institute of Physics
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  5. Lanzhou University (China). School of Nuclear Science and Technology
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Materials Research Letters
Additional Journal Information:
Journal Volume: 5; Journal Issue: 6; Journal ID: ISSN 2166-3831
Publisher:
Taylor and Francis
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; Radiation damage; damage buildup; concentrated solid solution alloys; Rutherford backscattering spectrometry; molecular dynamics; binary collision approximation
OSTI Identifier:
1399546

Zhang, S., Nordlund, K., Djurabekova, F., Granberg, F., Zhang, Y., and Wang, T. S.. Radiation damage buildup by athermal defect reactions in nickel and concentrated nickel alloys. United States: N. p., Web. doi:10.1080/21663831.2017.1311284.
Zhang, S., Nordlund, K., Djurabekova, F., Granberg, F., Zhang, Y., & Wang, T. S.. Radiation damage buildup by athermal defect reactions in nickel and concentrated nickel alloys. United States. doi:10.1080/21663831.2017.1311284.
Zhang, S., Nordlund, K., Djurabekova, F., Granberg, F., Zhang, Y., and Wang, T. S.. 2017. "Radiation damage buildup by athermal defect reactions in nickel and concentrated nickel alloys". United States. doi:10.1080/21663831.2017.1311284. https://www.osti.gov/servlets/purl/1399546.
@article{osti_1399546,
title = {Radiation damage buildup by athermal defect reactions in nickel and concentrated nickel alloys},
author = {Zhang, S. and Nordlund, K. and Djurabekova, F. and Granberg, F. and Zhang, Y. and Wang, T. S.},
abstractNote = {We develop a new method using binary collision approximation simulating the Rutherford backscattering spectrometry in channeling conditions (RBS/C) from molecular dynamics atom coordinates of irradiated cells. The approach allows comparing experimental and simulated RBS/C signals as a function of depth without fitting parameters. The simulated RBS/C spectra of irradiated Ni and concentrated solid solution alloys (CSAs, NiFe and NiCoCr) show a good agreement with the experimental results. The good agreement indicates the damage evolution under damage overlap conditions in Ni and CSAs at room temperature is dominated by defect recombination and migration induced by irradiation rather than activated thermally.},
doi = {10.1080/21663831.2017.1311284},
journal = {Materials Research Letters},
number = 6,
volume = 5,
place = {United States},
year = {2017},
month = {4}
}