FIELD: producing chemical elements from source materials distributed in water flow. SUBSTANCE: in order to transform atomic-molecular structure of source material, high-temperature plasma current is produced with contraction between extended sections of working chamber. Impulse discharge is built up in contraction region of plasma current at maximum strength of magnetic field varying along plasma current. Plasma is stabilized by DC current flowing between extended sections. Material transforming device has magnet 2 with magnetic field concentrator 4, plasma-current dielectric guide 5 with working space 15 and gradual contraction 16, electrodes 7 and 8 to build up impulse discharge provided with through holes 13, 14. EFFECT: improved characteristics. 12 cl, 3 dwg , 3 tbl
