The linear growth rate of the CFI versus the wave number k obtained by solving Eqs. (6) and (7) of four typical cases for (a) conditions without SCE and (b) conditions with SCE. The growth rate are normalized to the . The parameters are keV, and .
Snapshots of the beam densities (nb ) andthe transverse electromagnetic fields (By and Ex ) at the energy saturation time for four simulation cases. (A) ; (B) ; (C) ; (D) . Other parameters are .
Temporal evolution of the transverse electric and magnetic field energies for the four collisionless PIC simulation cases as shown in Fig. 2 .
Temporal evolution of the transverse electric and magnetic field energies in the collisional PIC simulation cases with the background plasma density of . Other parameters are the same with Fig. 2 .
Dependence of the maximum growth rate with the anisotropy of the background plasma, for different plasma longitudinal temperature, for a beam with energy of 2 MeV, temperature of 30 keV, and density ratio of .
Comparison of the growth rates of CFI obtained from different methods.
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