The effects of particle recycling on the divertor plasma: A particle-in-cell with Monte Carlo collision simulation

被引：12

作者：

Chang, Mingyu ^{[1
]}

Sang, Chaofeng ^{[1
]}

Sun, Zhenyue ^{[1
]}

Hu, Wanpeng ^{[1
]}

Wang, Dezhen ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Phys, Minist Educ, Key Lab Mat Modificat Laser Ion & Elect Beams, Dalian 116024, Peoples R China

来源：

PHYSICS OF PLASMAS | 2018年 / 25卷 / 05期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

EDGE; TRANSPORT; ENERGY;

D O I：

10.1063/1.5023731

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A Particle-In-Cell (PIC) with Monte Carlo Collision (MCC) model is applied to study the effects of particle recycling on divertor plasma in the present work. The simulation domain is the scrape-off layer of the tokamak in one-dimension along the magnetic field line. At the divertor plate, the reflected deuterium atoms (D) and thermally released deuterium molecules (D-2) are considered. The collisions between the plasma particles (e and D+) and recycled neutral particles (D and D2) are described by the MCC method. It is found that the recycled neutral particles have a great impact on divertor plasma. The effects of different collisions on the plasma are simulated and discussed. Moreover, the impacts of target materials on the plasma are simulated by comparing the divertor with Carbon (C) and Tungsten (W) targets. The simulation results show that the energy and momentum losses of the C target are larger than those of the W target in the divertor region even without considering the impurity particles, whereas the W target has a more remarkable influence on the core plasma. Published by AIP Publishing.

引用

页数：7

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