  We study a mechanism of collapse of the condensate wave function in the
Gross-Pitaevskii theory with attractive interparticle interaction. We
reformulate the Gross-Pitaevskii equation as Newton's equations for the
particle flux and introduce a collapsing fraction of particles. We assume that
the collapsing fraction is expelled from the condensate due to dissipation.
Using this hypothesis we analyze the dependence of the condensate collapse on
the initial conditions. We found that for a properly chosen negative scattering
length the remnant fraction becomes larger when the initial aspect ratio is
increased.
