Numerical simulation of wakefields excitation in the dielectric structure filled with inhomogeneous plasma

Results of numerical simulation of wakefield excitation in the dielectric structure filled with plasma created in capillary discharge are given. Three different models of dependence of plasma density on radius were investigated: 1) homogeneous, 2) parabolic and 3) the dependence obtained numerically by N.A. Bobrova [9]. The obtained results have shown that an amplitude of the accelerating field weakly depends on the model of plasma density dependence. At the same time the transverse wakefield force significantly changes in an amplitude: for the model 3) amplitudes of transverse force is twice higher than in the case of homogeneous plasma.