Abstract: An apparatus for feeding parts in ion beam machining, comprising a sealed case with an aperture to admit an ion beam, the case accommodating a holding and moving arrangement made in the form of a detachable closed-loop conveyor for the parts. The closed-loop conveyor is enclosed in a framework turnable together with the conveyer about the axis thereof intersecting the part being machined at a definite angle relative to the axis of the ion beam. This permits machining the part on all sides without altering the direction of the ion beam, and allows withdrawal of all other parts and devices from the zone of the ion beam.

Abstract: A semiconductor photoelectric generator comprising interconnected photocells with rectifying barriers, with isotype junctions in the base region and with current leads in the regions adjacent the rectifying barriers. Each photocell has a working surface, receiving incident radiation. The isotype junctions in the photocells are provided in direct proximity to the working surfaces of the photocells. At least one rectifying barrier in each photocell is provided at a distance from the working surface not exceeding the diffusion length of minority current carriers in the base region. The photocells can have the shape of microminiature parallelepipeds having at least two dimensions commensurate with the diffusion length of minority current carriers in the base region.