Effect of the Injected Plasma on the Effective Radius of the Magnetic Bubble

Effect of the Injected Plasma on the Effective Radius of the Magnetic Bubble
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注入等离子体对磁泡有效半径的影响

DOI:
10.1088/1009-0630/12/1/21
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发表时间:
2010-02
影响因子:
1.7
通讯作者:
Tao Xiaoping
Tao Xiaoping
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Li Hui;Tao Xiaoping

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讨论了注入等离子体对等离子体帆中磁泡有效半径的影响。通过求解二维磁流体动力学方程和磁通量守恒方程的结果表明,由纯偶极子场形成的磁泡的有效半径很小,高密度等离子体的膨胀可以有效地减小磁场的衰减速率.磁场的衰减率可以是r−1.4。因此,磁泡的有效半径可以是8.2 km。磁泡的有效半径比纯偶极场的情况增加了约36倍。
Effect of the injected plasma on the effective radius of the magnetic bubble in plasma sail is discussed. Results from solving both the two-dimensional magneto-hydrodynamic (MHD) equations and the magnetic flux conservation equation indicate that the effective radius of the magnetic bubble formed by the pure dipole field is very small, and the rate of the falloff of the magnetic field can be effectively reduced by the inflation of the high-density plasma. The falloff rate of the magnetic field can be r−1.4. The effective radius of the magnetic bubble can hence be 8.2 km. The effective radius of the magnetic bubble increases about thirty-six times, comparing to the case of the pure dipole field.
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发表时间: 2004-06
期刊: Proceedings. 2004 NASA/DoD Conference on Evolvable Hardware, 2004.
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