Current generation by asymmetrical heating of minority ions without the injection of net momentum into a plasma is studied numerically by solving the Fokker–Planck equation in which the quasilinear diffusion term for cyclotron absorption is added to the Coulomb collision terms. The results show that current drive efficiency is better in a H–D plasma than in a 3He–D plasma. The applicability of asymmetrical minority ion heating current drive in a hydrogen tokamak plasma with the existence of impurity ions is also investigated. The practicality of this current drive process for fusion reactors is discussed.
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