title: Excitation of nonlinear two-dimensional wake waves in radially nonuniform plasma.
abstract: It is shown that an undesirable curvature of the wave front of a two-dimensional nonlinear wake wave, excited in uniform plasma by a relativistic charged bunch or laser pulse, may be compensated by radial change of the equilibrium plasma density.
authors.affiliation: Yerevan Physics Institute, Alikhanian Brothers Street 2, Yerevan 375036, Armenia.
authors.forename: A G
authors.initials: AG
authors.lastname: Khachatryan