Suppression of Small-Scale Magnetic Field Generation by Transformation of the Kinetic Energy Spectrum

摘要: The stabilization of a small-scale dynamo caused by change in the energy spectrum conducting plasma flow is investigated. Such kinetic properties can be due to reverse conversion generated magnetic into energy. We model process using classical Kazantsev model, which describes operation mirror-symmetric turbulent flow. Our results suggest that appearance at small scales stop generation process. This turns out no less efficient than braking through conservation total and energies. However, it looks more realistic, because for most systems observed lower one several orders magnitude. show this method nonlinear suppression just often not enough; particular, simple shift Gaussian toward only amplifies generation. In paper, we describe reasonable transformation allows both critical supercritical regimes stabilized. fact described directly recorded an experimental test equally important.