Boltzmann kinetic equation for excitations outside vortex cores

Using the microscopic theory of nonstationary superconductivity we derive t he semi-classical Boltzmann equation suitable for quasiparticles with energ ies above the gap edge in the mixed state of a clean type II superconductor . We demonstrate that the concept of semi-classical particles can be succes sfully used for studying the vortex dynamics in clean superconductors and F ermi superfluids.