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Title: Beam-contamination-induced compositional alteration and its neutron-atypical consequences in ion simulation of neutron-induced void swelling

Although accelerator-based ion irradiation has been widely accepted to simulate neutron damage, neutron-atypical features need to be carefully investigated. In this study, we have shown that Coulomb force drag by ion beams can introduce significant amounts of carbon, nitrogen, and oxygen into target materials even under ultra-high vacuum conditions. The resulting compositional and microstructural changes dramatically suppress void swelling. By applying a beam-filtering technique, introduction of vacuum contaminants is greatly minimized and the true swelling resistance of the alloys is revealed and matches neutron behavior closely. These findings are a significant step toward developing standardized procedures for emulating neutron damage.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [2] ;  [1]
  1. Texas A & M Univ., College Station, TX (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-18-20847
Journal ID: ISSN 2166-3831; TRN: US1801674
Grant/Contract Number:
AC52-06NA25396; NE0008297
Type:
Accepted Manuscript
Journal Name:
Materials Research Letters
Additional Journal Information:
Journal Volume: 5; Journal Issue: 7; Journal ID: ISSN 2166-3831
Publisher:
Taylor and Francis
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 43 PARTICLE ACCELERATORS; Ion-beam processing; ion implantation; precipitation
OSTI Identifier:
1422930

Gigax, Jonathan G., Kim, Hyosim, Aydogan, Eda, Garner, Frank A., Maloy, Stuart Andrew, and Shao, Lin. Beam-contamination-induced compositional alteration and its neutron-atypical consequences in ion simulation of neutron-induced void swelling. United States: N. p., Web. doi:10.1080/21663831.2017.1323808.
Gigax, Jonathan G., Kim, Hyosim, Aydogan, Eda, Garner, Frank A., Maloy, Stuart Andrew, & Shao, Lin. Beam-contamination-induced compositional alteration and its neutron-atypical consequences in ion simulation of neutron-induced void swelling. United States. doi:10.1080/21663831.2017.1323808.
Gigax, Jonathan G., Kim, Hyosim, Aydogan, Eda, Garner, Frank A., Maloy, Stuart Andrew, and Shao, Lin. 2017. "Beam-contamination-induced compositional alteration and its neutron-atypical consequences in ion simulation of neutron-induced void swelling". United States. doi:10.1080/21663831.2017.1323808. https://www.osti.gov/servlets/purl/1422930.
@article{osti_1422930,
title = {Beam-contamination-induced compositional alteration and its neutron-atypical consequences in ion simulation of neutron-induced void swelling},
author = {Gigax, Jonathan G. and Kim, Hyosim and Aydogan, Eda and Garner, Frank A. and Maloy, Stuart Andrew and Shao, Lin},
abstractNote = {Although accelerator-based ion irradiation has been widely accepted to simulate neutron damage, neutron-atypical features need to be carefully investigated. In this study, we have shown that Coulomb force drag by ion beams can introduce significant amounts of carbon, nitrogen, and oxygen into target materials even under ultra-high vacuum conditions. The resulting compositional and microstructural changes dramatically suppress void swelling. By applying a beam-filtering technique, introduction of vacuum contaminants is greatly minimized and the true swelling resistance of the alloys is revealed and matches neutron behavior closely. These findings are a significant step toward developing standardized procedures for emulating neutron damage.},
doi = {10.1080/21663831.2017.1323808},
journal = {Materials Research Letters},
number = 7,
volume = 5,
place = {United States},
year = {2017},
month = {5}
}