|  | G |
SECTION G — PHYSICS

NUCLEONICS

|  | G21 |
NUCLEAR PHYSICS; NUCLEAR ENGINEERING

|  | G21H |
OBTAINING ENERGY FROM RADIOACTIVE SOURCES; APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES; UTILISING COSMIC RADIATION (measurement of nuclear or X-radiation Fulltext... Hierarchy... Expanded...G01T; fusion reactors Fulltext... Hierarchy... Expanded...G21B; nuclear reactors Fulltext... Hierarchy... Expanded...G21C; semiconductor devices sensitive to electromagnetic or corpuscular radiation Fulltext... Hierarchy... Expanded...H01L 31/00)

|  | 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 40/00, Fulltext... Hierarchy... Expanded...H01J 47/00)

|  | 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 or a thermionic converter (discharge tubes functioning as thermionic generators Fulltext... Hierarchy... Expanded...H01J 45/00; thermoelectric devices comprising a junction of dissimilar materials Fulltext... Hierarchy... Expanded...H01L 35/00) [2]

|  | 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 in which a gas filling or screen or coating is excited to luminesce by radioactive material structurally associated with the lamp 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 19/08; in electrostatic separation Fulltext... Hierarchy... Expanded...B03C 3/38; for after-treatment of coatings applied as liquids or other fluent materials Fulltext... Hierarchy... Expanded...B05D 3/06; for action between electric vehicles and tracked apparatus Fulltext... Hierarchy... Expanded...B61L 1/10, Fulltext... Hierarchy... Expanded...B61L 3/06; introducing isotopes into organic compounds Fulltext... Hierarchy... Expanded...C07B 23/00; for preparation of organic chemical compounds Fulltext... Hierarchy... Expanded...C07, Fulltext... Hierarchy... Expanded...C08, e.g. Fulltext... Hierarchy... Expanded...C08F 2/46; for treating macromolecular substances or articles made therefrom Fulltext... Hierarchy... Expanded...C08J 3/28, Fulltext... Hierarchy... Expanded...C08J 7/10, Fulltext... Hierarchy... Expanded...C08J 7/18; for cracking of hydrocarbon oils Fulltext... Hierarchy... Expanded...C10G 15/00, Fulltext... Hierarchy... Expanded...C10G 32/04; for reforming 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; irradiation devices, gamma- or X-ray microscopes Fulltext... Hierarchy... Expanded...G21K; in discharge tubes Fulltext... Hierarchy... Expanded...H01J; apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere, Fulltext... Hierarchy... Expanded...H01T 20/02; for carrying-off electrostatic charges Fulltext... Hierarchy... Expanded...H05F 3/06)

|  | G21H 5/02 |
· | as tracers

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