The chaos of motion of the charged particles in the earth's magnetotail.

• Main Authors: Hsin-Lun Liu, 劉興倫
• Other Authors: Lin-Ni Hau
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/61258830340563351618

碩士 === 國立中央大學 === 太空科學研究所 === 84 === The nightside magnetotail is an important region of the Earth's magnetosphere, which contains a current sheet sepa- rating regions of nearly oppositely directed magnetic field. In this region the motion of charged particles cannot be described by the standard Guiding-Center Drift Formulation, we thus consider the nonlinear dynamics of collisionless plasma. By using numerical simulation, we study the motion of charged particles in one-dimensional and two-dimensional equilibrium magnetic field models; the results are shown in real space abd phase space. Depending on the initail condi- tion and magnetic field configuration, the orbit of charged particles may be classified as: bounded integrable, unbounded stochastic and unbounded transient orbits with different trapped time in the current sheet. We will also study the particle dynamics in the presece of an electric field due to the penetration of the solar wind into Eath's magnetotail.