Quasistatic magnetic fields generated by nonrelativistic intense linearly polarized （LP） and circularly polarized （CP） laser pulses in an initially uniform underdense plasma in the collision-dominated limit are in...Quasistatic magnetic fields generated by nonrelativistic intense linearly polarized （LP） and circularly polarized （CP） laser pulses in an initially uniform underdense plasma in the collision-dominated limit are investigated analytically. Using a selfconsistent analytical model, we perform a detailed derivation of quasistatic magnetic fields in the laser pulse envelope in the collision-dominated limit to obtain exact analytical expressions for magnetic fields and discuss the dependence of magnetic fields on laser and plasma parameters. Equations for quasistatic magnetic fields including both axial componentBz and the azimuthal one Be are derived simultaneously from such a selfconsistent model. The dependence of quasistatic magnetic field on incident laser intensity, transverse focused radius of laser pulse, electron density and electron temperature is discussed.展开更多
基金supported by the National Natural Science Foundation of China (Grant Nos. 60621063,60678007,and 10774184)the Chinese Academy of Sciences (Grant No. KJCX2-YW-T01)the National Basic Research Program of China (Grant No. 2007CB815101)
文摘Quasistatic magnetic fields generated by nonrelativistic intense linearly polarized （LP） and circularly polarized （CP） laser pulses in an initially uniform underdense plasma in the collision-dominated limit are investigated analytically. Using a selfconsistent analytical model, we perform a detailed derivation of quasistatic magnetic fields in the laser pulse envelope in the collision-dominated limit to obtain exact analytical expressions for magnetic fields and discuss the dependence of magnetic fields on laser and plasma parameters. Equations for quasistatic magnetic fields including both axial componentBz and the azimuthal one Be are derived simultaneously from such a selfconsistent model. The dependence of quasistatic magnetic field on incident laser intensity, transverse focused radius of laser pulse, electron density and electron temperature is discussed.
