Experimental confirmation of the linear relation between plasma current and external vertical magnetic field in EXL-50 spherical torus energetic electron plasmas  

作　　者：董力立 王明远 刘文军 石跃江 董家齐 郭栋 孙恬恬 顾翔 宋显明 袁保山 彭元凯 the ENN Team Lili DONG;Mingyuan WANG;Wenjun LIU;Yuejiang SHI;Jiaqi DONG;Dong GUO;Tiantian SUN;Xiang GU;Xianming SONG;Baoshan YUAN;Yueng-Kay Martin PENG;the ENN Team(Hebei Key Laboratory of Compact Fusion,Langfang 065001,People’s Republic of China;School of Mathematics and Physics,Anqing Normal University,Anqing 246133,People’s Republic of China;ENN Science and Technology Development Co.Ltd.,Langfang 065001,People’s Republic of China)

机构地区：[1]Hebei Key Laboratory of Compact Fusion,Langfang 065001,People’s Republic of China [2]School of Mathematics and Physics,Anqing Normal University,Anqing 246133,People’s Republic of China [3]ENN Science and Technology Development Co.Ltd.,Langfang 065001,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第8期32-36,共5页等离子体科学和技术（英文版）

摘　　要：A three-fluid equilibrium plasma with bulk plasma and energetic electrons has been observed on the Xuanlong-50(EXL-50) spherical torus, where the energetic electrons play a crucial role in sustaining the plasma current and pressure. In this study, the equilibrium of a multi-fluid plasma was investigated by analyzing the relationship between the external vertical magnetic field(B_(V)),plasma current(I_(p)), the poloidal ratio(β_(p)) and the Shafranov formula. Remarkably, our research demonstrates some validity of the Shafranov formula in the presence of multi-fluid plasma in EXL-50 spherical torus. This finding holds significant importance for future reactors as it allows for differentiation between alpha particles and background plasma. The study of multi-fluid plasma provides a significant reference value for the equilibrium reconstruction of burning plasma involving alpha particles.

关 键 词：plasma equilibrium Shafranov formula multi-fluid plasma 

分 类 号：TL612[核科学技术—核技术及应用] TL631.24