  This paper is devoted to studying of dispersion of waves in the magnetized
plasma with the spin and exploring of new methods of the generation wave in the
plasma. We consider the dispersion of waves, existed in the plasma in
consequence of dynamic of the magnetic moments. It is shown there are nine new
waves in the magnetized plasma because of the magnetic moments dynamic. We show
there are instabilities at propagation of the neutron beam through the plasma.
Increments of instabilities caused by neutron beam are calculated. For studying
of this effects we generalize and use the method of the many-particle quantum
hydrodynamics. Described processes can play important role at calculation of
the stability and the safeness of the nuclear reactors and the studying of the
processes in the atmosphere of the neutron stars.
