NUCLEAR FUEL COMPOSITION, NUCLEAR REACTOR, METHOD FOR PRODUCING NUCLEAR FUEL COMPOSITION (OPTIONS) AND METHOD FOR GIVING NUCLEAR FUEL TO CRITICITY

摘要

1. Composition of nuclear fuel containing nuclear fissile material and a neutron absorber material adjacent to nuclear fissile material. 2. The composition according to claim 1, characterized in that the neutron absorber material contains samarium. The composition according to claim 2, characterized in that the neutron absorber material contains 25-75% by mass of samarium, the rest is a rare earth element. The composition of claim 3, wherein the rare earth element is gadolinium. The composition according to claim 3, characterized in that the neutron absorber material contains 30-40% samarium by weight. The composition according to claim 5, characterized in that the neutron absorber material contains 35-38% samarium by weight. The composition according to claim 1, characterized in that the neutron absorber material is ≤0.5% of the total mass of the nuclear fissile material and the neutron absorber material. The composition according to claim 7, characterized in that the neutron absorber material is 0 0.1% of the specified total weight. The composition according to claim 8, characterized in that the neutron absorber material is ≤ 0.05% of said total weight. The composition according to claim 1, characterized in that the nuclear fissile material contains double hydride of uranium and zirconium (UZrH), and the neutron absorber material contains samarium. The composition according to any one of claims 1 to 10, characterized in that the neutron absorber material is dispersed within the nuclear fissile material. Composition according to any one of claims 1 to 10, characterized in that the neutron absorber material is a coating applied to the tablets of nuclear fissile material. A nuclear reactor containing a composition according to any�