Magnetic Field Generation and Electron Acceleration in Relativistic Laser Channel

[摘要] The interaction between energetic electrons and a circularly polarized laser pulse inside an ion channel is studied. Laser radiation can be resonantly absorbed by electrons executing betatron oscillations in the ion channel and absorbing angular momentum from the laser. The absorbed angular momentum manifests itself as a strong axial magnetic field (inverse Faraday effect). The magnitude of this magnetic field is calculated and related to the amount of the absorbed energy. Absorbed energy and generated magnetic field are estimated for the small and large energy gain regimes. Qualitative comparisons with recent experiments are also made.

[发布日期] 2001-12-12 [发布机构] Princeton University. Plasma Physics Laboratory.

[关键词] Tail Electrons;Acceleration;Magnetic Fields;70 Plasma Physics And Fusion Technology;Betatron Oscillations