PLASMA-HEATING NEAR SATELLITE ALFVEN RESONANCES IN STELLARATORS

Perturbation theory is used to study the absorption of Alfven oscillat ions in a stellarator plasma. It is shown that, along with the region of fundamental Alfven resonance, additional resonance regions (satelli te Alfven resonances) can exist in a plasma. In these regions, small a mplitudes of the satellite harmonics of both Alfven waves and fast mag netosonic waves increase, and these waves convert into small-scale kin etic waves. The distribution of rf fields and the rf power absorbed in the close vicinity of satellite Alfven resonances are found.