This paper considers a composite cylindrical structure. with low-enriched uranium (LEU) foil enclosed between two aluminum 6061-T6 cylinders. A recess is cut all around the outer circumference of the inner tube to accommodate the LEU foil of open-cross section. To obtain perfect contact at the interfaces of the foil and the tubes. https://parisnaturalfoodes.shop/product-category/bee-pollen/