FIELD: electricity.
SUBSTANCE: invention relates to the field of study of physical properties of substances, in particular to investigation of processes in gas-discharge devices and plasma. between electrodes at fixed distance between them the voltage is supplied; the resulted current melts and evaporates thin wire which is arranged in a free space between electrodes; distance between electrodes is selected so that discharge does not occur spontaneously without wire, and conditions for avalanche breakdown of discharge gap are created between electrodes. The discharge channel is placed in the magnetic field, perpendicular to it, that reduces withdrawal of positive ions from the discharge interval, that is an additional source of heat for evaporation of electrodes.
EFFECT: possibility of ignition of independent arc discharge in open free space.
1 dwg
