Modeling of chemical erosion of graphite due to hydrogen by inclusion of chemical reactions in SDTrimSP

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:268

Article

Rai, A.¹  Mutzke, A.¹  Schneider, R.¹ 

[1] Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany

关键词: Hydrogen;    TRIM;    Chemical erosion;    Carbon;    Physical sputtering;    Diffusion;   

DOI  :  10.1016/j.nimb.2010.06.040

来源: Elsevier

【 摘 要 】

Erosion of carbon-based materials plays a very crucial role in determining its candidature as a potential plasma facing material in fusion devices. Carbon erosion yield shows strong dependence on energy, flux of the incoming ions and the target temperature Various experiments and theoretical models have made successful attempts to understand some aspects of the erosion mechanism of carbon bombarded by hydrogen ions. They ale valid for a particular parameter range None of the models alone can explain the temperature, energy and flux dependence of erosion simultaneously In the present work different aspects of erosion mechanism are parameterized. A new model which takes into account the basic merits of different theoretical models and the various parameterized quantities is embedded in the SDTrimSP [1,2] program This upgraded SDTrimSP enables us to calculate the physical and chemical sputtering in a single model for various parameter ranges The results obtained by the upgraded SDTrimSP are in good agreement with experimental data (C) 2010 Elsevier B.V. All rights reserved

【 授权许可】

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