NONLINEAR SPIN-WAVES ON TOPOLOGICAL DEFECTS OF TEXTURE IN SUPERFLUID HE-3-B

We have observed non-linear behaviour of stationary spin waves localis ed on textural topological defects. We can explain our results in the framework of the Schrodinger equation with feedback. The new method gi ves us the ability to see many topological defects, which are undistin guished by traditional methods of NMR. We have Sound that some of the non-linear spin wave modes can be responsible for the extremely long l ived induction decay signals called ''Persistent signals''.