報(bào)告時(shí)間：2026年3月27日（星期五）10:00

報(bào)告地點(diǎn)：材料樓601室

報(bào) 告 人：高亮 博士

工作單位：德國(guó)亥姆霍茲國(guó)家研究中心聯(lián)合會(huì)于利希研究中心等離子體物理所

舉辦單位：材料科學(xué)與工程學(xué)院

報(bào)告簡(jiǎn)介：

Magnetic confinement fusion devices such as the TOKAMAK rely on sustaining a high-temperature plasma in close proximity to material surfaces that define and protect the reactor boundary. The interaction between the confined plasma and these plasma-facing materials—commonly referred to as plasma–surface interaction (PSI)—is a central challenge for achieving reliable and long-lived fusion operation. In a tokamak environment, energetic particles, heat fluxes, and radiation from the plasma continuously bombard the first wall and divertor components, leading to complex physical and chemical processes at the interface between plasma and solid surfaces.

Fundamentally, PSI encompasses several coupled mechanisms. Charged particles and neutrals from the edge plasma impact material surfaces, producing processes such as sputtering, reflection, implantation, and defect generation in the near-surface region. These processes modify both the plasma and the material: surface erosion introduces impurities back into the plasma, while implanted hydrogen isotopes accumulate in the material lattice. Such hydrogen isotope retention is particularly important because the fuel of fusion plasmas typically involves deuterium and tritium. Excessive retention can influence fuel inventory, safety considerations, and the overall efficiency of reactor operation.

Surface morphology and material composition evolve dynamically under sustained plasma exposure. Re-deposition of eroded material, formation of nanostructures, and radiation-induced defects can alter the thermal and mechanical properties of plasma-facing components. These changes feed back to the plasma boundary conditions, influencing recycling, edge plasma density, and power exhaust.

Understanding PSI therefore requires an interdisciplinary framework combining plasma physics, surface science, and materials science. Experimental investigations in tokamak devices and dedicated plasma exposure facilities, together with theoretical modeling and simulations, are used to clarify the underlying mechanisms and to guide the development of resilient plasma-facing materials. A fundamental grasp of plasma–surface interaction processes is essential for the design of next-generation fusion reactors and for achieving stable, efficient, and safe fusion energy production. An introductory talk will be presented: I will start from the basic concepts of nuclear fusion and then move forward into the relevant PSI processes. Three major issues toward a commercial TOKAMAK fusion reactor will be discussed taking ITER as an example.

報(bào)告人簡(jiǎn)介：

高亮，男，博士。自2010年在中科院等離子體物理研究所讀博，2011年獲得‘中科院-馬普學(xué)會(huì)博士生聯(lián)合培養(yǎng)計(jì)劃’獎(jiǎng)學(xué)金資助前往德國(guó)馬普學(xué)會(huì)等離子體物理研究所深造，師從Christian Linsmeier教授并在Wolfgang Jacob資深研究員領(lǐng)導(dǎo)的研究小組繼續(xù)從事聚變等離子體與材料表面相互作用PSI (Plasma-Surface Interaction)方向的實(shí)驗(yàn)研究。研究課題主要集中于聚變鎢面向等離子體材料與氫同位素及氦等離子體相互作用，涉及氫、氘、氦等離子體輻照損傷及缺陷演化，以及這些元素在鎢材料中的滯留、擴(kuò)散及滲透行為研究。2015年博士畢業(yè)后繼續(xù)在馬普等離子體所從事博士后研究工作并于2017年獲得歐洲聚變委員會(huì)（Eurofusion）青年研究員項(xiàng)目資助獨(dú)立承擔(dān)“聚變等離子體雜質(zhì)對(duì)氫同位素滯留、擴(kuò)散及滲透行為影響”。該項(xiàng)目每年在全歐盟范圍內(nèi)僅遴選5-10名新晉畢業(yè)博士進(jìn)行為期兩年約15-20萬(wàn)歐元的資助。2018年底項(xiàng)目結(jié)題后繼續(xù)在IPP Garching從事博士后研究工作兩年。2020年起至今就職于德國(guó)亥姆霍茲國(guó)家研究中心聯(lián)合會(huì)于利希研究中心等離子體物理所，從事氫同位素及氦等輕質(zhì)元素在核聚變材料內(nèi)的行為研究，負(fù)責(zé)TDS實(shí)驗(yàn)室日常運(yùn)作。至今已在德國(guó)從事高水平科學(xué)研究15年，其間指導(dǎo)博士研究生5名、碩士研究生8名。發(fā)表學(xué)術(shù)論文、專(zhuān)著40余篇，被引用900余次。其中以第一作者和通訊作者在國(guó)際核心期刊發(fā)表論文20篇，包括在A(yíng)cta Materialia, Nuclear Fusion 等相關(guān)領(lǐng)域頂級(jí)期刊。多次參與聚變材料領(lǐng)域的重要國(guó)際會(huì)議進(jìn)行學(xué)術(shù)交流，受邀在國(guó)際原子能機(jī)構(gòu)IAEA Technical meeting on defect stabilization and hydrogen supersaturation (Aix en Provence, April, 2022)，面向等離子體材料與部件國(guó)際會(huì)議（International Conference on Plasma-Facing Materials and Components for Fusion Applications）, 聚變等離子體與表面相互作用（International Conference on Plasma-Surface Interactions in Controlled Fusion）等本領(lǐng)域重要國(guó)際會(huì)議做大會(huì)邀請(qǐng)報(bào)告，并以科研項(xiàng)目合作及講座形式與國(guó)內(nèi)多家科研院所一直保持緊密合作關(guān)系。