Stochastic Diffusion of Energetic Ions in Wendelstein-Type Stellarators
DOI:
https://doi.org/10.15407/ujpe63.6.495Keywords:
stochastic diffusion, stellarators, particle orbits, adiabatic invariantsAbstract
The collisionless stochastic diffusion of energetic ions in optimized stellarators of the Wendelstein type has been considered. The phenomenon concerned was predicted earlier in the framework of a simplified theory describing the separatrix crossing by ions. The jumps of the adiabatic invariant in magnetic configurations of a stellarator are calculated. The analysis of the results obtained confirms the importance of the stochastic diffusion and demonstrates that the diffusion coefficient can considerably exceed the available result.
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