Resonant Acceleration of Electrons in Combined Self-Consistent Quasistatic Electromagnetic Fields and Intense Laser Fields
CHEN Fen-Ce1,3, HE Xian-Tu1,2, SHENG Zheng-Mao1, QIAO Bin2, ZHANG Hong1
1Department of Physics, Zhejiang University, Hangzhou 310027
2Inisitute of Applied Physics and Computational Mathematics, PO Box 8009, Beijing 100088
3Department of Mathematic and Physics, Fujian Educational Institute, Fuzhou 350001
Resonant Acceleration of Electrons in Combined Self-Consistent Quasistatic Electromagnetic Fields and Intense Laser Fields
1Department of Physics, Zhejiang University, Hangzhou 310027
2Inisitute of Applied Physics and Computational Mathematics, PO Box 8009, Beijing 100088
3Department of Mathematic and Physics, Fujian Educational Institute, Fuzhou 350001
Abstract： Using the single electron model, the acceleration of electrons in combined circularly polarized intense laser fields and the spontaneous quasistatic fields (including axial and azimuthal magnetic fields, the axial and transverse electric fields) produced in intense laser plasma interaction is investigated analytically and numerically by fitting the proper parameters of the quasistatic fields based on the data from the experiment and numerical calculation. A new resonant condition is given. It is found that the resonance acceleration of electron depends not only on laser field, but also on the bounce frequency oscillating in the quasistatic magnetic field and electric field. The net energy gained by electron does not increase monotonously with axial electric field, but there are some optimal axial electric fields.
2006, Vol. 23 
