OBTAINING ENERGY FROM RADIOACTIVE SOURCES

**Definition:** This place covers:

Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes.

Arrangements for direct conversion of radiation energy from radioactive sources into forms of energy other than electrical energy.

Applications of radiation from radioactive sources or arrangements therefor, not otherwise provided for.

Use of effects of cosmic radiation.

**Limiting references (this place does not cover):** - Measurement of nuclear or X-radiation -> G01T - Fusion reactors -> G21B - Nuclear fission reactors -> G21C - Lamps in which a gas filling is excited to luminescence by external corpuscular radiation or by radioactive material structurally associated with the lamp -> H01J65/04 - Lamps in which a gas filling is excited to luminescence by radioactive material -> H01J65/06