Modeling of hydrogen retention and recycling in plasma-facing graphite

LIU Shengguang; SUN Jizhong; DAI Shuyu; WANG Dezhen

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Modeling of hydrogen retention and recycling in plasma-facing graphite

LIU Shengguang *,SUN Jizhong,DAI Shuyu,WANG Dezhen

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, 116024

*Correspondence author

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Funding: 高等学校博士学科点专项科研基金新教师类资助课题（No.20120041120042）

Opened online:28 November 2013

Accepted by: none

Citation: LIU Shengguang,SUN Jizhong,DAI Shuyu.Modeling of hydrogen retention and recycling in plasma-facing graphite[OL]. [28 November 2013] http://en.paper.edu.cn/en_releasepaper/content/4571152

The graphite used as plasma facing components in fusion devices is composed of graphitic crystallites, connected by intercrystalline voids. The porous structure gives rise to great complexity to understand the hydrogen transport behaviour in graphite. In this work dynamic Monte Carlo simulations are carried out to understand the dependence of the hydrogen retention, re-emission, and thermal desorption on the void fraction of graphite. The results show that the void fraction plays an important role in hydrogen retention and release behaviour.

Keywords:plasma; void fraction; retention; re-emission; thermal desorption

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