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作 者:桑龙龙 陆全明 谢锦林 张乔枫 丁卫星 柯阳光 高新亮 郑坚 Longlong SANG;Quanming LU;Jinlin XIE;Qiaofeng ZHANG;Weixing DING;Yangguang KE;Xinliang GAO;Jian ZHENG(Deep Space Exploration Laboratory,School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,People’s Republic of China;CAS Center for Excellence in Comparative Planetology,CAS Key Laboratory of Geospace Environment,University of Science and Technology of China,Hefei 230026,People’s Republic of China;Collaborative Innovation Center of Astronautical Science and Technology,Harbin 150001,People’s Republic of China;CAS Key Laboratory of Geospace Environment,School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People’s Republic of China)
机构地区:[1]Deep Space Exploration Laboratory,School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,People’s Republic of China [2]CAS Center for Excellence in Comparative Planetology,CAS Key Laboratory of Geospace Environment,University of Science and Technology of China,Hefei 230026,People’s Republic of China [3]Collaborative Innovation Center of Astronautical Science and Technology,Harbin 150001,People’s Republic of China [4]CAS Key Laboratory of Geospace Environment,School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People’s Republic of China
出 处:《Plasma Science and Technology》2023年第9期68-72,共5页等离子体科学和技术(英文版)
基 金:supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB 41000000);the Key Research Program of Frontier Sciences,CAS(No.QYZDJ-SSW-DQC010);Fundamental Research Funds for the Central Universities(Nos.WK3420000006,WK3420000013,WK3420000017 and WK2080000135).
摘 要:Propagation of whistler-mode waves in a magnetized plasma structure is investigated in the Keda linear magnetized plasma device.The magnetized plasma structure has its density peak in the center,and the background magnetic field is homogeneous along the axial direction.A whistlermode wave with a frequency of 0.3 times of electron cyclotron frequency(fce)is launched into the plasma structure.The wave normal angle(WNA)is about 25°,and the wavefront exhibits a wedge structure.During propagation of the whistler wave,both the propagating angle and WNA slowly approach zero,and then the wave is converged toward the center of the structure.Therefore,the wave tends to be trapped in the plasma structure.The results present observational evidence of the propagation of a whistler-mode wave trapped in the enhanced-density structure in a laboratory plasma.This trapping effect is consistent with satellite observations in the inner magnetosphere.
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