  A chiral SU(2) x SU(2) Lagrangian containing, besides the usual meson fields,
their first radial excitations is considered. The Lagrangian is derived by
bosonization of the Nambu-Jona-Lasinio quark model with separable non-local
interactions, with form factors corresponding to 3-dimensional ground and
excited state wave functions. The spontaneous breaking of chiral symmetry is
governed by the NJL gap equation. The first radial excitations of the pions,
rho-and omega-mesons are described with the help of two form factors. The weak
decay constant F_pi' is calculated. The values for the decay widths of the
processes rho -> 2 pi, pi' -> rho pi, rho' -> 2 pi, rho' -> omega pi and omega'
-> rho pi are obtained in agreement with the experimental data.
