From a classical dynamic simulation,we find the kinetic energy of the electrons generated during laser plasma generation depends on the laser polarization and intensity.The electron kinetic energy reaches its maximum ...From a classical dynamic simulation,we find the kinetic energy of the electrons generated during laser plasma generation depends on the laser polarization and intensity.The electron kinetic energy reaches its maximum with a fixed laser intensity for circularly polarized laser pulse.The fluorescence spectra at 380.4 nm from N2 and 391.3 nm from N2^＋ are measured;these are generated by both the direct excitation and electron collision excitation.The electron collision excitation is determined by the electron energy and reaches the maximal with a circularly polarized pulse.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11504148 and 11135002)the Fundamental Research Funds for the Central Universities(Nos.lzujbky-2015-269 and lzujbky-2015-242)
文摘From a classical dynamic simulation,we find the kinetic energy of the electrons generated during laser plasma generation depends on the laser polarization and intensity.The electron kinetic energy reaches its maximum with a fixed laser intensity for circularly polarized laser pulse.The fluorescence spectra at 380.4 nm from N2 and 391.3 nm from N2^＋ are measured;these are generated by both the direct excitation and electron collision excitation.The electron collision excitation is determined by the electron energy and reaches the maximal with a circularly polarized pulse.
