Improvements to a triple helical flow vortex reactor add an inner wall (103) having at least one transition point (121) between the fuel inlet end (101) and the gas outlet end (102) and a circumferential flow apparatus (120) operating at each transition point (121). A restrictor at each transition point (121) is optionally added to reduce aerodynamic resistance to the various fluid flows. A vortex swirler is optionally added through the fuel inlet end, which preferably surrounds an inlet nozzle combined with a plasma torch. The fuel inlet end is optionally equipped with cooling channels in which a coolant can flow isolated from the reaction chamber. An optional coaxial cylindrical wall extends through the reaction chamber and creates a toroidal volume for reactions.