Study of the electron heat pulse propagation from ECRH on T-10

Two reports are united in this paper. The heat pulse propagation (HPP) was studied on T-10 and it had been shown earlier that normal (χHPe∼χBe) as well as enhanced (χHPe>>χBe) HPP velocity from ECRH and sawtooth oscillations depending on the regime are observed. It is shown that under central ECRH in the regimes with high values of q1∼6 (χHPe>>χBe) in the whole column gradient zone. On the contrary, under central ECRH on the background of the long-time non-central heating the conductivity decreases (χHPe<χBe) on the heat wave front. In this case the heat wave sharpens the broad Te(r) profile created by the non-central ECRH. The influence of the local value ∇Te/Te on the value χHPe is observed. The new data on HPP at T-10 are presented below. (author) 9 refs., 1 fig