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Title: Experimental evidence for ‘buckle, ruck and tuck’ in neutron irradiated graphite

Abstract

The current mainstream theory for radiation-induced dimensional change of nuclear graphite is based on the notion that interstitially displaced carbon atoms will coalesce into dislocation loops (i.e., additional basal planes). This standard atomic-displacement model has been challenged by theories based on first principles calculations. The so-called ‘ruck and tuck’ of basal planes has been proposed as an alternative mechanism to explain the observed c-axis expansion under irradiation; however, no such defects have been observed experimentally so far. In this study, the first experimental evidence for the presence of a ‘ruck and tuck’ defect in high-temperature neutron-irradiated nuclear graphite is presented.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2];  [2];  [1]; ORCiD logo [1]
  1. Boise State Univ., ID (United States)
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Boise State Univ., ID (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)
OSTI Identifier:
1593346
Alternate Identifier(s):
OSTI ID: 1601834
Report Number(s):
INL-JOU-20-57498
Journal ID: ISSN 0008-6223; TRN: US2100912
Grant/Contract Number:  
SC0016427; AC07-05ID14517
Resource Type:
Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 159; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Nuclear graphite; graphite; microstructure; radiation effects; 36 - MATERIALS SCIENCE

Citation Formats

Johns, Steve, He, Lingfeng, Kane, Joshua J., Windes, William E., Ubic, Rick, and Karthik, Chinnathambi. Experimental evidence for ‘buckle, ruck and tuck’ in neutron irradiated graphite. United States: N. p., 2019. Web. https://doi.org/10.1016/j.carbon.2019.12.028.
Johns, Steve, He, Lingfeng, Kane, Joshua J., Windes, William E., Ubic, Rick, & Karthik, Chinnathambi. Experimental evidence for ‘buckle, ruck and tuck’ in neutron irradiated graphite. United States. https://doi.org/10.1016/j.carbon.2019.12.028
Johns, Steve, He, Lingfeng, Kane, Joshua J., Windes, William E., Ubic, Rick, and Karthik, Chinnathambi. Thu . "Experimental evidence for ‘buckle, ruck and tuck’ in neutron irradiated graphite". United States. https://doi.org/10.1016/j.carbon.2019.12.028. https://www.osti.gov/servlets/purl/1593346.
@article{osti_1593346,
title = {Experimental evidence for ‘buckle, ruck and tuck’ in neutron irradiated graphite},
author = {Johns, Steve and He, Lingfeng and Kane, Joshua J. and Windes, William E. and Ubic, Rick and Karthik, Chinnathambi},
abstractNote = {The current mainstream theory for radiation-induced dimensional change of nuclear graphite is based on the notion that interstitially displaced carbon atoms will coalesce into dislocation loops (i.e., additional basal planes). This standard atomic-displacement model has been challenged by theories based on first principles calculations. The so-called ‘ruck and tuck’ of basal planes has been proposed as an alternative mechanism to explain the observed c-axis expansion under irradiation; however, no such defects have been observed experimentally so far. In this study, the first experimental evidence for the presence of a ‘ruck and tuck’ defect in high-temperature neutron-irradiated nuclear graphite is presented.},
doi = {10.1016/j.carbon.2019.12.028},
journal = {Carbon},
number = ,
volume = 159,
place = {United States},
year = {2019},
month = {12}
}

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Works referenced in this record:

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