Electron acceleration in vacuum with two overlapping linearly polarized laser pulses

Abstract

A novel electron acceleration approach with two overlapping linearly polarized laser pulses in vacuum is proposed. By our simulation, the energy and space spreads can reduce greatly comparing with the acceleration with only one laser pulse having doubled peak laser intensity for realistic laser parameters and the average energy gain from our scheme can be doubled for certain pulse lengths, at the same time. Using numerical simulation, analytical criteria for optimal regimes of our acceleration scheme is found.

Enhancement of electron energy during vacuum laser acceleration in an inhomogeneous magnetic field

“…4 Moreover, the Gaussian TEM (0,0) mode has an intensity peak at the central axis, so the electron receives a strong ponderomotive force at the transverse direction and scatters away with low energy. 5,6 To overcome the difficulties associated with the Gaussian laser pulses and enhance the electron acceleration, several schemes based on capture and acceleration scenario, 7-9 frequency-chirped laser pulses, [10][11][12][13][14][15] two-laser pulse interaction, [14][15][16][17][18][19] and the application of an external magnetic field [19][20][21][22][23][24][25] have been proposed.…”

A Method to design composite insulation structures based on reliability for pulsed power systems

“…Generally, there are three types of composite insulation structures: gas/solid insulators (Xiao et al, 2010;Peng et al, 2011;Shao et al, 2012;Zhao et al, 2013a), liquid/solid insulators (Wang et al, 2005;Cheng et al, 2012;Liu et al, 2012;Zhao et al, 2012;2013b;2013c), and vacuum/solid insulators (Kiricov et al, 2003;Milton, 1972;Miller, 1989;1993;Zhao et al, 2010;Wang et al, 2012;. These insulators play both the roles of separating a megavolt pulse voltage and presenting mechanical support.…”