NOVELTY - Producing hydrogen from hydrocarbon material by plasma treatment involves supplying hydrocarbon material in fluid form to plasma treatment cell having anode and cathode and further electrodes disposed in volume in the cell; generating plasma between anode and cathode positioned in hydrocarbon material by applying first electrical potential between anode and cathode, thus decomposing part of the material through plasma discharge and generating hydrogen gas and carbon soot; and controlling the process by relocating the generated plasma between further electrodes (130, 132) and the anode.    USE - For producing hydrogen from hydrocarbon material by plasma treatment (claimed); as the source such as thermodynamic in combustion, electric conversion in fuel cells, nuclear in fission and developing possibility for fusion experiments; as a fuel; used in the petroleum industry for the refining and upgrading of crude petroleum and in chemical industry for the manufacture of fertilizers, methanol and variety of organic chemicals; in food industry for the hydrogenation of edible plant oils to fats and in the plastic industry for making various polymers; in metal, electronics, glass, electric power and space industry.    ADVANTAGE - The method provides lower energy consumption, higher energy efficiency in production, starting and stopping the decomposition process is close to instantaneous, user friendly control with possibility of instant variable output of the process, scalability of application, decomposition approaching 100% under optimal high pressure, low electrical conductivity of input hydrocarbon gas can be converted through plasma discharge in to high conductivity physical properties.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an apparatus for producing hydrogen and synthetic carbon-free gas from hydrocarbon material including hydrocarbons, comprises a cell defining a volume for containing an hydrocarbon material, the cell comprising an electrically conductive material; hydrocarbon material input unit for supplying the hydrocarbon material to the volume; gas collection unit for conveying hydrogen or synthetic carbon-free gas away from the cell; at least one anode positioned within the cell for immersion within hydrocarbon material contained within the cell and for generating plasma; at least two further electrodes positioned within the cell for immersion within the hydrocarbon material and for generating electrical field within the cell to relocate plasma generated at the or each electrode away from the or each anode, each further electrode being electrically isolated from the cathode.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic isometric view of a plasma hydrocarbon deposing cell.    Hydrocarbon decomposition cell (100)    Cylindrical body (112)    Cover (113)    Stacked parts (111A, 111B)    Plasma relocating electrodes (130, 132)