|  | G |
SECTION G — PHYSICS

NUCLEONICS

|  | G21 |
NUCLEAR PHYSICS; NUCLEAR ENGINEERING

|  | G21H |
OBTAINING ENERGY FROM RADIOACTIVE SOURCES; UTILISING COSMIC RADIATION (measuring radiation Fulltext... Hierarchy... Expanded...G01T; nuclear fusion Fulltext... Hierarchy... Expanded...G21B; by nuclear fission Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H01J)

|  | G21H 1/10 |
· | Cells in which radiation heats a thermoelectric junction (thermoelectric elements Fulltext... Hierarchy... Expanded...H01V 1/00, Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H01S 3/00)

|  | G21H 3/02 |
· | in which material is excited to luminesce by the radiation (lamps with radioactive excitation Fulltext... Hierarchy... Expanded...H01J 65/00)

|  | G21H 5/00 |
Applications of radiation from radioactive sources or arrangements therefor (producing mutation in plants Fulltext... Hierarchy... Expanded...A01H 1/06; preservation of dairy products Fulltext... Hierarchy... Expanded...A23C; preservation of foodstuffs Fulltext... Hierarchy... Expanded...A23L 3/26; for therapeutic purposes Fulltext... Hierarchy... Expanded...A61N 5/10; in chemical, physical or physicochemical processes in general Fulltext... Hierarchy... Expanded...B01J 1/10; in electrostatic separation Fulltext... Hierarchy... Expanded...B03C 3/38, B 03 C 3/58; for after-treatment of coatings Fulltext... Hierarchy... Expanded...B44D 1/50; for interaction between electric vehicles and tracked apparatus Fulltext... Hierarchy... Expanded...B60L 1/10, Fulltext... Hierarchy... Expanded...B60L 3/06; introducing isotopes into organic compounds Fulltext... Hierarchy... Expanded...C07B 23/00; for preparation of hydrocarbons Fulltext... Hierarchy... Expanded...C07C 3/24 for preparation of polymerisation product Fulltext... Hierarchy... Expanded...C08F 1/16; for treating macromulecular substances Fulltext... Hierarchy... Expanded...C08J 1/02; for cracking of hydrocarbon oils Fulltext... Hierarchy... Expanded...C10G 15/00, Fulltext... Hierarchy... Expanded...C10G 31/04; for refining naphtha Fulltext... Hierarchy... Expanded...C10G 35/16; preservation or ageing of products obtained from fermentation processes Fulltext... Hierarchy... Expanded...C12H 1/06, Fulltext... Hierarchy... Expanded...C12H 1/16; for bleaching fibres Fulltext... Hierarchy... Expanded...D06L 3/04; measuring Fulltext... Hierarchy... Expanded...G01; in discharge tubes Fulltext... Hierarchy... Expanded...H01J; for carrying-off electrostatic charges Fulltext... Hierarchy... Expanded...H05F 3/06)

|  | G21H 5/02 |
· | as tracers

|  | G21H 7/00 |
Using effects of cosmic radiation