Spin rotation and birefringence effect for a particle in a high energy   storage ring and measurement of the real part of the coherent elastic   zero-angle scattering amplitude, electric and magnetic polarizabilities
  In the present paper the equations for the spin evolution of a particle in a storage ring are analyzed considering contributions from the tensor electric and magnetic polarizabilities of the particle. Study of spin rotation and birefringence effect for a particle in a high energy storage ring provides for measurement as the real part of the coherent elastic zero-angle scattering amplitude as well as tensor electric and magnetic polarizabilities.   We proposed the method for measurement the real part of the elastic coherent zero-angle scattering amplitude of particles and nuclei in a storage ring by the paramagnetic resonance in the periodical in time nuclear pseudoelectric and pseudomagnetic fields. 
V.G. Baryshevsky, A.A. Gurinovich