Patent Number: 054870941
Section: claims

1. A method of manufacturing a double-layer pellet, comprising: a first step of supplying a first material for forming an outer layer, into a space provided in a pellet carrier body;  a second step of cooling and solidifying the first material in said space, thereby forming a block of the first material; a third step of forming a hole in a first end of the block;  a fourth step of supplying a second material for forming a core, into the hole formed in the first end of the block;  a fifth step of cooling and solidifying the second material in said hole, thereby forming a core;  a sixth step of scraping a second end of said block, which is opposite to the first end; and  a seventh step of supplying an additional amount of the first material onto the first end of said block, cooling and solidifying the additional amount of the first material, thereby forming a layer covering the core of the second material.  a first step of supplying a first material for forming an outer layer, into a space provided in a pellet carrier body;  a second step of cooling and solidifying the first material in said space, thereby forming a block of the first material;  a third step of inserting a chip into a first end of the block;  a fourth step of scraping a second end of said block, which is opposite to the first end; and  a fifth step of supplying an additional amount of the first material onto the first end of said block, cooling and solidifying the additional amount of the first material, thereby forming a layer covering the chip. 2. The method according to claim 1, wherein said second material is tritium or helium when said first material is deuterium, said second material is deuterium when said first material is hydrogen, and said second material is deuterium when said first material is a helium chip. 3. The method according to claim 1, wherein said fourth step is performed after said third step. 4. The method according to claim 1, wherein said third and fourth steps are performed simultaneously. 5. A method of manufacturing a double-layer pellet, comprising: 6. The method according to claim 1, wherein said first material includes deuterium and said second material includes lithium.