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Generation of Helical and Axial Magnetic Fields by the Relativistic Laser Pulses in Under-dense Plasma: Three-Dimensional Particle-in-Cell Simulation |
| ZHENG Chun-Yang;ZHU Shao-Ping;HE Xian-Tu |
| Institute of Applied Physics and Computational Mathematics,
P.O. Box 8009, Beijing 100088 |
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| Cite this article: |
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ZHENG Chun-Yang, ZHU Shao-Ping, HE Xian-Tu 2002 Chin. Phys. Lett. 19 959-961 |
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Abstract The quasi-static magnetic fields created in the interaction of the relativistic laser pulses with under-dense plasmas have been investigated by three-dimensional particlein-cell (PIC) simulation. The relativistic ponderomotive force can drive an intense electron current in the laser propagation direction, which is responsible for the generation of a helical magnetic field. The axial magnetic field results from a difference beat of wave-wave, which drives a solenoidal current. In particular, the physical significance of the kinetic model for the generation of the axial magnetic field is discussed.
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| Keywords:
52.40.Nk
52.35.Mw
52.25.Rv
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Published: 01 July 2002
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| PACS: |
52.40.Nk
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52.35.Mw
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(Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))
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52.25.Rv
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