  The method of integrals of motion is used to construct families of
generalized coherent states of a nonrelativistic spinless charged particle in a
constant electric field. Families of states, differing in the values of their
standard deviations at the initial time, are obtained. Depending on the initial
values of the standard deviations, and also on the electric field, it turns out
to be possible to identify some families with semiclassical states.
