On scattering diagnostics with periodically pulsed lasers to follow the continuous evolution of time dependent plasma parameters

The possibilities to use periodically pulsed lasers for plasma scattering diagnostics are discussed. An experiment with successful application of a periodically pulsed frequency-doubled Nd:YAG laser is described and results are given. Application of the method to monitor continuously, with millisecond time resolution, parameters of Tokamak type plasmas, is considered.