Active diagnostics of impurity ions in the plasma of a T-4 tokamak
Afrosimov V.V., Gordeev Yu.S., Zinov'ev A.N., Korotkov A.A.
The absolute content of carbon nuclei in a plasma was measured, for the first time ever, by a method based on the registration of the radiation produced in charge exchange of impurity ions with the atoms of the beam injected in the plasma. It is shown that light impurities do not accumulate in the plasma and the effective time of departure of the carbon nuclei from the central region of the pinch (20^10 msec) is estimated.