Enhancement of Energetic-Electron Population During Magnetic Reconnection Associated with Strong Tearing Mode in Non-Disruptive HL-2A Plasmas

被引：0
作者：
Yang, Q. -L. [1 ]
Chen, W. [1 ]
Yu, L. -m. [1 ]
Shi, P. -w. [1 ]
Ji, X. -q. [1 ]
Shi, Zh. -B. [1 ]
机构：
[1] Southwest Inst Phys, POB 432, Chengdu 610041, Peoples R China
来源：
PLASMA PHYSICS REPORTS | 2023年 / 49卷 / 11期
基金：
中国国家自然科学基金;
关键词：
magnetic reconnection; energetic electron; tearing mode; energy distribution; ACCELERATION;
D O I：
10.1134/S1063780X22602127
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：
Laboratory observations of enhancements of energetic-electron population are presented during magnetic reconnection associated with strong tearing mode in non-disruptive tokamak plasmas. The hardX-ray (HXR) spectrum detected by cadmium-telluride (CdTe) scintillator detectors and the non-thermal radiation measured by the electron cyclotron emission (ECE) are used to analyze the behaviors of energ eticelectrons on HL-2A. A population of energetic electrons is generated by parallel electric fields during mag-netic reconnection, which is evidenced by the production of hard X-rays with energy 10 keV < E gamma < 200 keV. The results could assist to better understand the acceleration mechanism of electrons in the parameter-regime of tokamak plasma. It is observed that the energetic-electrons jointly accelerated by Ohmic electric fields and parallel electric fields have significant effects on the behaviors of low frequency MHD modes, namely, which excite Alfv & eacute;nic and acoustic type instabilities during strong tearing modes (TMs)
引用
收藏
页码：1243 / 1250
页数：8
相关论文
共 22 条
  • [11] Egedal J, 2012, NAT PHYS, V8, P321, DOI [10.1038/NPHYS2249, 10.1038/nphys2249]
  • [12] OBSERVATION OF BETA-INDUCED ALFVEN EIGENMODES IN THE DIII-D TOKAMAK
    HEIDBRINK, WW
    STRAIT, EJ
    CHU, MS
    TURNBULL, AD
    [J]. PHYSICAL REVIEW LETTERS, 1993, 71 (06) : 855 - 858
  • [13] OIeroset M, 2002, Phys Rev Lett, V89, P195001
  • [14] Priest E., 2000, MAGNETIC RECONNECTIO, P612, DOI [10.1017/CBO9780511525087, DOI 10.1017/CBO9780511525087, 10.1017/CBO9780511525087.]
  • [15] Generation of suprathermal electrons during magnetic reconnection at the sawtooth crash and disruption instability in the T-10 tokamak
    Savrukhin, PV
    [J]. PHYSICAL REVIEW LETTERS, 2001, 86 (14) : 3036 - 3039
  • [16] Wesson J., 2011, TOKAMAKS
  • [17] SAWTOOTH RECONNECTION
    WESSON, JA
    [J]. NUCLEAR FUSION, 1990, 30 (12) : 2545 - 2549
  • [18] GEODESIC ACOUSTIC WAVES IN HYDROMAGNETIC SYSTEMS
    WINSOR, N
    JOHNSON, JL
    DAWSON, JM
    [J]. PHYSICS OF FLUIDS, 1968, 11 (11) : 2448 - &
  • [19] Magnetic reconnection
    Yamada, Masaaki
    Kulsrud, Russell
    Ji, Hantao
    [J]. REVIEWS OF MODERN PHYSICS, 2010, 82 (01) : 603 - 664
  • [20] Overview of HL-2A experiment results
    Yang, Q. W.
    Liu, Yong
    Ding, X. T.
    Dong, J. Q.
    Yan, L. W.
    Liu, D. Q.
    Xuan, W. M.
    Chen, L. Y.
    Rao, J.
    Duan, X. R.
    Song, X. M.
    Cao, Z.
    Zhang, J. H.
    Mao, W. C.
    Zhou, C. P.
    Li, X. D.
    Wang, S. J.
    Bu, M. N.
    Chen, W.
    Chen, Y. H.
    Cui, C. H.
    Cui, Z. Y.
    Deng, Z. C.
    Dong, Y. B.
    Feng, B. B.
    Gao, Q. D.
    Hong, W. Y.
    Hu, H. T.
    Huang, Y.
    Kang, Z. H.
    Lan, T.
    Li, B.
    Li, G. S.
    Li, H. J.
    Li, Qiang
    Li, Qing
    Li, W.
    Li, Y. G.
    Li, Zj.
    Liu, Yi
    Liu, Z. T.
    Luo, C. W.
    Mao, X. H.
    Pan, Y. D.
    Peng, J. F.
    Shao, K.
    Shi, Z. B.
    Song, X. Y.
    Wang, A. K.
    Wang, H.
    [J]. NUCLEAR FUSION, 2007, 47 (10) : S635 - S644
123