A hydrogen jet system includes an evacuated recirculation duct 12, 18 with a pump 20 to circulate gas around the recirculation duct and a control nozzle 22 to form a jet of gas; means 24, 25 to provide hydrogen gas into the duct; and an electrical device, such as arc electrodes 30 and an associated power supply 36 to provide energy into the jet of gas so as to form hydrogen atoms. The jet of gas is arranged to pass through a hollow electrode shell 40 defining opposed apertures 42, 43 that are aligned with the jet of gas; and a target electrode 44 is arranged beyond the electrode shell and also aligned with the jet of gas, so that hydrogen atoms would impact with the target electrode. The electrode shell and the target electrode are each connected to an external electrical terminal 50, 52. The electrode shell and the target electrode may each define heat exchange channels to remove heat energy during operation.
展开▼
