Journal of Instrumentation
Journal of Instrumentation
5 years ago

Relativistic electron kinetic effects on laser diagnostics in burning plasmas

Toroidal interferometry/polarimetry (TIP), poloidal polarimetry (PoPola), and Thomson scattering systems (TS) are major optical diagnostics being designed and developed for ITER. Each of them relies upon a sophisticated quantitative understanding of the electron response to laser light propagating through a burning plasma. Review of the theoretical results for two different applications is presented: interferometry/polarimetry (I/P) and polarization of Thomson scattered light, unified by the importance of relativistic (quadratic in v Te / c ) electron kinetic effects. For I/P applications, rigorous analytical results are obtained perturbatively by expansion in powers of the small parameterτ = T e / m e c 2 , where T e is electron temperature and m e is electron rest mass. Experimental validation of the analytical models has been made by ...

Publisher URL: http://iopscience.iop.org/1748-0221/13/02/C02009

DOI: 10.1088/1748-0221/13/02/C02009

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