Onsager type relations for new-introduced kinetic coefficients connected with magnetic field in case of 3He---A, 3He---B

New terms describing dissipation are added to currents in the spin hydrodynamic equations for superfluid phases A and B of 3He. The terms contain kinetic coefficients connected with external magnetic field and nonconventional fields conjugated to the hydrodynamic variables describing suitable broken symmetries. Due to the Onsager type relations only two new coefficients in each phase (both connected with magnetic field) remain in the equations and can be expressed in terms of the “old” kinetic coefficients and some generalized susceptibilities. Experimental data for superfluid 3He may be able to provide information about “viscosity” of magnetic fields.