Excitement of Local Non-Uniformities in Plasma by Unstable Ion-Temperature-Gradient Waves

• DOI: 10.1007/s10894-011-9467-3
• Publication Date: 2011-09-06T17:22:00Z
• Authors: Vladimir I. Khvesyuk
• Keywords: Temperature Gradient; Density gradient

It is considered excitement of local non-uniformities in plasma by unstable ion-temperature-gradient (ITG) waves. New version of these processes based on the approach of finite wave amplitude is suggested. Some features of ITG-waves in this approximation are discussed. First of all qualitative distributions of values of plasma density fluctuations and temperature fluctuations perturbed by ITG-waves inside non-uniform plasma along minor tokamak radius are estimated. It is shown the obtained dependencies based on the suggested model qualitatively correspond to the experimental data.