{"title":"Modelling of particle-reflection-distributions of rough surfaces","authors":"U. von Toussaint, R. Preuss","doi":"10.1016/j.nme.2024.101817","DOIUrl":null,"url":null,"abstract":"<div><div>The modelling of plasma-wall-interactions (PWI) depends on distributions describing the angle- and energy distribution of particles scattered at first wall. Most PWI codes (e.g. SOLPS, EIRENE) rely on extensive tables based on reflection simulations (e.g. SDTrimSP-1D) or analytical formulae. However, both approaches assume an atomistically flat (smooth) surface. Rough surfaces which are formed under particle impact typically display a very different particle distribution compared to smooth surfaces. However, roughening is almost unavoidable, e.g. due to preferential sputtering, crystal-orientation dependent sputtering, precipitates, or thermal cycling. In this paper we investigate the effects of roughening on the reflection distributions using W- and W-Fe-surfaces of different morphologies within the binary collision approximation by SDTrimSP-2D.</div></div>","PeriodicalId":56004,"journal":{"name":"Nuclear Materials and Energy","volume":"41 ","pages":"Article 101817"},"PeriodicalIF":2.3000,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Materials and Energy","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352179124002400","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The modelling of plasma-wall-interactions (PWI) depends on distributions describing the angle- and energy distribution of particles scattered at first wall. Most PWI codes (e.g. SOLPS, EIRENE) rely on extensive tables based on reflection simulations (e.g. SDTrimSP-1D) or analytical formulae. However, both approaches assume an atomistically flat (smooth) surface. Rough surfaces which are formed under particle impact typically display a very different particle distribution compared to smooth surfaces. However, roughening is almost unavoidable, e.g. due to preferential sputtering, crystal-orientation dependent sputtering, precipitates, or thermal cycling. In this paper we investigate the effects of roughening on the reflection distributions using W- and W-Fe-surfaces of different morphologies within the binary collision approximation by SDTrimSP-2D.
期刊介绍：
The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.
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