Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in Solids
The application of mean-field rate theory equations have proven to be a versatile method in simulating defect dynamics and temporal changes in the microstructure of materials. The reliability and usefulness of the method, however, depends critically on the defect interaction parameters used. In this...
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MDPI AG
2020-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/11/2621 |
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doaj-58b4346e0ab44719ad4deb87f65d228e2020-11-25T03:49:17ZengMDPI AGMaterials1996-19442020-06-01132621262110.3390/ma13112621Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in SolidsTommy Ahlgren0Kalle Heinola1Department of Physics, University of Helsinki, P.O. Box 43, FI-00014 Helsinki, FinlandInternational Atomic Energy Agency, PO Box 100, 1400 Vienna, AustriaThe application of mean-field rate theory equations have proven to be a versatile method in simulating defect dynamics and temporal changes in the microstructure of materials. The reliability and usefulness of the method, however, depends critically on the defect interaction parameters used. In this study, we show that the main interaction parameter, the sink strength, intrinsically depends on the detrapping, or the dissociation process itself. We present a theory on how to determine the appropriate sink strengths. The correct sink strength required for a detrapping defect, is considerably larger than the values commonly used, and thus should not be neglected.https://www.mdpi.com/1996-1944/13/11/2621rate equationssink strengthrate theorydefect dynamicstrappingTDS |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Tommy Ahlgren Kalle Heinola |
| spellingShingle |
Tommy Ahlgren Kalle Heinola Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in Solids Materials rate equations sink strength rate theory defect dynamics trapping TDS |
| author_facet |
Tommy Ahlgren Kalle Heinola |
| author_sort |
Tommy Ahlgren |
| title |
Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in Solids |
| title_short |
Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in Solids |
| title_full |
Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in Solids |
| title_fullStr |
Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in Solids |
| title_full_unstemmed |
Improvements to the Sink Strength Theory Used in Multi-Scale Rate Equation Simulations of Defects in Solids |
| title_sort |
improvements to the sink strength theory used in multi-scale rate equation simulations of defects in solids |
| publisher |
MDPI AG |
| series |
Materials |
| issn |
1996-1944 |
| publishDate |
2020-06-01 |
| description |
The application of mean-field rate theory equations have proven to be a versatile method in simulating defect dynamics and temporal changes in the microstructure of materials. The reliability and usefulness of the method, however, depends critically on the defect interaction parameters used. In this study, we show that the main interaction parameter, the sink strength, intrinsically depends on the detrapping, or the dissociation process itself. We present a theory on how to determine the appropriate sink strengths. The correct sink strength required for a detrapping defect, is considerably larger than the values commonly used, and thus should not be neglected. |
| topic |
rate equations sink strength rate theory defect dynamics trapping TDS |
| url |
https://www.mdpi.com/1996-1944/13/11/2621 |
| work_keys_str_mv |
AT tommyahlgren improvementstothesinkstrengththeoryusedinmultiscalerateequationsimulationsofdefectsinsolids AT kalleheinola improvementstothesinkstrengththeoryusedinmultiscalerateequationsimulationsofdefectsinsolids |
| _version_ |
1724496333540163584 |