|  | G |
SECTION G — PHYSICS

NUCLEONICS

|  | G21 |
NUCLEAR PHYSICS; NUCLEAR ENGINEERING

|  | G21B |
FUSION REACTORS (uncontrolled reactors Fulltext... Hierarchy... Expanded...G21J)

|  | G21C |
NUCLEAR REACTORS (fusion reactors Fulltext... Hierarchy... Expanded...G21B; explosives Fulltext... Hierarchy... Expanded...G21J; simulators Fulltext... Hierarchy... Expanded...G06G 7/54)

|  | G21D |
NUCLEAR POWER PLANT (simulators Fulltext... Hierarchy... Expanded...G06G 7/52)

|  | G21F |
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION, OR PARTICLE BOMBARDMENT; DECONTAMINATION ARRANGEMENTS; TREATING RADIOACTIVELY-WASTE MATERIAL (radiation protection by pharmaceutical means A 61 K 3/00, Fulltext... Hierarchy... Expanded...A61L 23/00; in cosmonautic vehicles Fulltext... Hierarchy... Expanded...B64G; combined with a reactor Fulltext... Hierarchy... Expanded...G21C 11/00; combined with X-ray tubes Fulltext... Hierarchy... Expanded...H01J 35/16; combined with X-ray apparatus Fulltext... Hierarchy... Expanded...H05G 1/02)

|  | G21G |
CONVERSION OF CHEMICAL ELEMENTS; PRODUCING NEUTRONS; MODERATING NEUTRONS

|  | 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)

|  | G21J |
NUCLEAR EXPLOSIVES; APPLICATIONS THEREOF

|  | G21J |
Note(s) This sub-class deals with uncontrolled fission and/or fusion reactions.

|  | G21K |
TECHNIQUES FOR HANDLING PARTICLES OR ELECTROMAGNETIC RADIATION NOT OTHERWISE PROVIDED FOR (X-ray technique Fulltext... Hierarchy... Expanded...H05G; plasma technique Fulltext... Hierarchy... Expanded...H05H)