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The measurement of electric dipole moment (EDM) in storage rings can potentially exceed the sensitivity of tests with neutral systems. The spin dynamics under such conditions is described by the Bargmann-Michel-Telegdi equation. It can be derived in the semiclassical approximation under several assumptions one of which is the zero pseudoscalar bilinear. However, many promising extensions to the standard model consider scalar-pseudoscalar couplings which assume nonzero electron pseudoscalar. We re-derive the spin precession equation under conditions that do not assume that pseudoscalar is zero. It leads to a correction term that might be required for matching the storage ring measurements with quantum field evaluations. Since the goal of storage ring experiments is to achieve unprecedently high accuracy in measuring EDM, it is important to accurately describe the spin dynamics under conditions of CP-violating extensions.

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New self-similar distributions functions (EDF's) in a non-uniform plasma embedded in a non-uniform high frequency electromagnetic field are reported. The dependences of the EDF's on the degree of density nonuniformity, on the rate of electron heating due to inverse bremsstrahlung absorption of high frequency field, and on the value of the electric current in a plasma are established. It is shown how the EDF modi6cations i d uence the energy absorption of the electromagnetic field and the electron heat transfer. The self-consistent states of the plasma and the electromagnetic field in which the self-similar electron distributions take place are described.

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