CONVERSION OF CHEMICAL ELEMENTS

**Definition:** This place covers:

Methods and apparatus for the conversion of chemical elements, e.g. isotope production or transmutation where a change of atomic number takes place either externally induced or by radioactive decay.

Radioactive sources (solid, liquid or gas).

**Limiting references (this place does not cover):** - Conversion of nuclear fuel -> G21C - Adaptations of reactors to facilitate experimentation or irradiation. Examples of such adaptations include modification of the reactor core to enable exposure of samples for investigative purposes -> G21C23/00 - Applications of radiation in general -> G21H5/00 - Handling particles. -> G21K - Irradiation devices. These typically include arrangements to deliberately subject bodies or materials to ionising radiation in order to take advantage of known effects of the radiation thereon -> G21K5/00 - X-ray tubes -> H01J35/00