Abstract: An apparatus for generating muons, comprising: a hydrogen accumulator including an inlet; an outlet separated from the inlet by a flow path; a hydrogen transfer catalyst arranged along the flow path; and an accumulating member for receiving hydrogen in ultra-dense state from the outlet at a receiving portion of the accumulating member and accumulating the hydrogen in the ultra-dense state at an accumulation portion of the accumulating member. The accumulating member has a downward sloping surface from the receiving portion to the accumulation portion. The apparatus further includes a field source, such as a laser, arranged to provide, to the accumulation portion of the accumulating member, a field adapted to stimulate emission of negative muons from hydrogen in the ultra-dense state. The apparatus further includes a specially designed barrier and a shield to retain the super-fluid ultra-dense hydrogen from creeping away from the accumulation portion of the generator.

Abstract: Collector for thermionic energy converter of a new type with low electronic work function. A thermionic energy converter includes an emitter and a collector and a space provided therebetween to which is supplied vapor of a thermionic material, for example cesium or other alkali metal. The emitter is heated from an external heat source so that it emits electrons to the collector. The collector is at least partly covered by a thin layer of a material, for example carbon, which is capable of interacting with the thermionic material and form excited states of this and maintain a layer of excited thermionic material on the surface of the collector. The new collector for thermionic converters exhibits a very low work function, which implies diminished losses is the energy conversion.