G
SECTION G — PHYSICS
  
NUCLEONICS
 G21
NUCLEAR PHYSICS; NUCLEAR ENGINEERING
 G21H
OBTAINING ENERGY FROM RADIOACTIVE SOURCES; UTILISING COSMIC RADIATION (measuring radiation G01T; nuclear fusion G21B; by nuclear fission G21C)
 G21H 1/00
Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes
 G21H 1/02
·  Cells charged directly by beta radiation
 G21H 1/04
·  Cells using secondary emission induced by alpha radiation, beta radiation, or gamma radiation (discharge tubes H01J 39/00)
 G21H 1/06
·  Cells wherein radiation is applied to the junction of different semiconductor materials
 G21H 1/08
·  Cells in which radiation ionises a gas in the presence of a junction of two dissimilar metals, i.e. contact potential-difference cells (discharge tubes H01J)
 G21H 1/10
·  Cells in which radiation heats a thermoelectric junction (thermoelectric elements H01V 1/00, H01V 3/00)
 G21H 1/12
·  Cells using conversion of the radiation into light combined with subsequent photoelectric conversion into electric energy
 G21H 3/00
Arrangements for direct conversion of radiation energy from radioactive sources into forms of energy other than electric energy, e.g. light (lasers H01S 3/00)
 G21H 3/02
·  in which material is excited to luminesce by the radiation (lamps with radioactive excitation H01J 65/00)
 G21H 5/00
Applications of radiation from radioactive sources or arrangements therefor (producing mutation in plants A01H 1/06; preservation of dairy products A23C; preservation of foodstuffs A23L 3/26; for therapeutic purposes A61N 5/10; in chemical, physical or physicochemical processes in general B01J 1/10; in electrostatic separation B03C 3/38, B 03 C 3/58; for after-treatment of coatings B44D 1/50; for interaction between electric vehicles and tracked apparatus B60L 1/10, B60L 3/06; introducing isotopes into organic compounds C07B 23/00; for preparation of hydrocarbons C07C 3/24 for preparation of polymerisation product C08F 1/16; for treating macromulecular substances C08J 1/02; for cracking of hydrocarbon oils C10G 15/00, C10G 31/04; for refining naphtha C10G 35/16; preservation or ageing of products obtained from fermentation processes C12H 1/06, C12H 1/16; for bleaching fibres D06L 3/04; measuring G01; in discharge tubes H01J; for carrying-off electrostatic charges H05F 3/06)
 G21H 5/02
·  as tracers
 G21H 7/00
Using effects of cosmic radiation