Patent ID: 6160862
Filing Date: 2000-12-12
Classification: G21G,H05H,Y10T

Abstract:
A primary target for the production of fission products comprising:a.) an inner cylinder having an outer surface, a first end, a second end, a first raised shoulder at the first end and a second raised shoulder at the second end;b.) a foil of fissionable material having a first surface and a second surface, whereby the foil forms a layer on the outer surface of the inner cylinder so that the foil first surface contacts the outer surface of the inner cylinder;c.) an outer barrier having a first surface and a second surface, whereby the outer barrier forms a layer on the foil such that the outer barrier first surface contacts the foil second surface;d.) an outer hollow cylinder selected from a material having a coefficient of thermal expansion lower than that of inner cylinder and adapted to receive the inner cylinder, having an inner surface, a first end, and a second end, so that the inner surface of the outer hollow cylinder forms a layer on the outer hollow barrier such that the outer cylinder inner surface contacts the outer barrier second surface, the outer hollow cylinder first end contacts the inner cylinder first raised shoulder and the outer hollow cylinder second end contacts the inner cylinder second raised shoulder, wherein the outer surface of the inner cylinder is tapered relative to the inner surface of the outer cylinder to ensure good physical contact between contact surfaces of the inner cylinder, the foil, the outer barrier and the outer cylinder; ande.) a means for attaching the outer cylinder first end to the inner cylinder first raised shoulder and the outer cylinder second end to the inner cylinder second raised shoulder, whereby the foil and the outer barrier are contained between the inner and outer cylinders.