%0 Journal Article
%T A relativistic model of electron cyclotron current drive efficiency in tokamak plasmas
%A Hu Y.M.
%A Hu Y.J.
%A Lin-Liu Y.R.
%J EPJ Web of Conferences
%D 2012
%I 
%R 10.1051/epjconf/20123201008
%X A fully relativistic model of electron cyclotron current drive (ECCD) efficiency based on the adjoint function techniques is considered. Numerical calculations of the current drive efficiency in a tokamak by using the variational approach are performed. A fully relativistic extension of the variational principle with the modified basis functions for the Spitzer function with momentum conservation in the electron-electron collision is described in general tokamak geometry. The model developed has generalized that of Marushchenko¡¯s (N.B . Marushchenko, et al. Fusion Sci. & Tech., 2009), which is extended for arbitrary temperatures and covers exactly the asymptotic for u   1 when Z ¡ú ¡Þ, and suitable for ray-tracing calculations.
%U http://dx.doi.org/10.1051/epjconf/20123201008