Open AccessВлияние градиента концентрации плазмы на возбуждение ионно-циклотронных колебаний в омических разрядах токамака ТУМАН-3М
Author(s) -
А.А. Белокуров,
Г.И. Абдуллина,
Л.Г. Аскинази,
Н.А. Жубр,
В.А. Корнев,
С.В. Крикунов,
С.В. Лебедев,
Д.В. Разуменко,
А.С. Тукачинский
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.18.48234.17907
Subject(s) - cyclotron , tokamak , plasma , atomic physics , excitation , ohmic contact , pellet , harmonics , deuterium , evaporation , ion , physics , chemistry , materials science , nuclear physics , electrode , thermodynamics , quantum mechanics , voltage , composite material
In TUMAN-3M tokamak ohmic hydrogen and deuterium discharges oscillations with ion cyclotron (IC) frequency were detected. Fast magnetic probes poloidal array in TUMAN-3M is capable of detecting several harmonics of IC frequency of main plasma isotope. Fuel pellet injection significantly reduces IC oscillations intensity, though after complete pellet evaporation returns to initial level. IC oscillations localization and excitation conditions are of certain interest. Based on drift-cyclotron instability excitation theory and numerical modeling of scenarios with ohmic LH-transition and pellet-injection plasma parameters (density gradient primarily) effect on IC oscillations excitation was studied.