EC RADIATIVE TRANSPORT IN FUSION PLASMAS WITH AN ANISOTROPIC DISTRIBUTION OF SUPRATHERMAL ELECTRONS
The RAYTEC code for electron cyclotron (EC) wave radiative transport modelling of fusion plasmas has been generalised to cover EC radiative transport in the presence of an anisotropic distribution of suprathermal electrons. More specifically, superposed on a Maxwellian bulk, the population of suprathermals is taken to be the sum of a Maxwellian and a distribution which is Maxwellian in energy and has a distribution in the form of a one-sided loss- or anti-loss-cone in pitch angle, such that suprathermals with an excess of momentum either perpendicular or parallel to the magnetic field (as characteristic, respectively, for EC cyclotron wave heating and current drive) can be dealt with. To display the impact of anisotropy, the profile of the net EC wave power density lost from an ITER-like plasma is evaluated as a function of the cone angle for suprathermals localized either at or off the plasma centre. The results thus obtained are discussed in respect to those for an isotropic distribution of the suprathermals as well as those for solely the bulk plasma..
FERRAN ALBAJAR MARINO BORNATICI FOLKER ENGELMANN
Fusion for Energy, Barcelona, 08019, Spain Physics Department A.Volta University of Pavia, Pavia, 27100, Italy Max-Planck-Institut f(u)r Plasmaphysik, Garching, 85748, Germany
国际会议
三亚
英文
215-221
2010-04-12（万方平台首次上网日期，不代表论文的发表时间）