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VOLUME 50 (1989) | ISSUE 11 | PAGE 453
Local measurements of poloidal magnetic field and safety factor q near discharge axis by active particle diagnostic method in the Tuman-3 tokamak
The poloidal magnetic field and the safety factor q have been determined experimentally for the first time from the angular distribution of the hydrogen atoms produced in the dissociation of molecules by the diagnostic beam. In the Tuman-3 tokamak, the safety factor 5 cm from the discharge axis is q = 2.6 at a current Id = 40 kA.