NOVELTY - A gas separation apparatus includes: (i) irradiation chamber for receiving a gas; (ii) irradiation device for irradiating the gas thus breaking apart the molecules of the gas into larger and smaller constituent components; (iii) separation arrangement for separating the larger and smaller components by forcing them toward different regions of the irradiation chamber; and (iv) first outlet for removing the smaller components.    USE - For separating gas, e.g. hydrocarbon gas such as natural gas or methane, used in fuel cells or for combustion.    ADVANTAGE - The recirculation pump reduces the back pressure that could lead to unwanted disturbances near the inlet. Gas that leaks through the space between the core and the core container (13) is collected at the inlet. The apparatus separates individual fragment species from each other during rotation inside the core, thus removing the need for pump and collection filter.    DETAILED DESCRIPTION - A gas separation apparatus (10) includes:    (a) irradiation chamber (12) for receiving a gas;    (b) irradiation device (6) for irradiating the gas within the irradiation chamber thus breaking apart the molecules of the gas (32) into larger and smaller constituent components;    (iii) separation arrangement (1) for separating the larger and smaller constituent components (30, 34) by forcing them toward different regions of the irradiation chamber; and    (iv) first outlet for removing the smaller constituent components from the irradiation chamber.    An INDEPENDENT CLAIM is also included for separating a gas by:    (1) introducing the gas into an irradiation chamber;    (2) irradiating the gas within the irradiation chamber with an irradiation device for causing molecules of the gas to break apart into larger and smaller constituent components;    (3) separating the larger and smaller first constituent components with a separation arrangement that forces the larger and smaller constituent components toward different regions of the irradiation chamber; and    (4) removing the smaller constituent components from the irradiation chamber through a first outlet.    DESCRIPTION OF DRAWING(S) - The figure is a schematic view of the gas separation device.    Separation arrangement (1)    Irradiation device (6)    Separation apparatus (10)    Irradiation chamber (12)    Core container (13)    Partition (14)    Constituent component (30, 34)