INTEGRAL SOLUTION FOR THE SPHERICALLY SYMMETRICAL FOKKER-PLANCK EQUATION

We propose an integral method to deal with the spherically symmetric n on-linear Fokker-Planck equation appearing in plasma physics. A probab ility transition expression is obtained, which takes into account the proper domain for the radial velocity component. The analytical and co mputational results are new, and the time evolution is completely sati sfactory. The main achievement of the method is conservation of both t he initial norm and energy for unlimited times, which has not been att ained in the differential approach to the problem.