The stochastically diffusive processes of electrons in the spatiotempo
rally complicated Langmuir fields, which are directly simulated by the
cubic-quintic nonlinear Schrodinger equation (NSE), and solitary enve
lope fields are investigated, respectively. It is shown that the diffu
sion of the low velocity particles is a very important mechanism for e
nergy being transformed from the region low velocity to the region of
high velocity.