|  | G |
SECTION G — PHYSICS

NUCLEONICS

|  | G21 |
NUCLEAR PHYSICS; NUCLEAR ENGINEERING

|  | G21K |
TECHNIQUES FOR HANDLING PARTICLES OR ELECTROMAGNETIC RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA- OR X-RAY MICROSCOPES (X-ray technique Fulltext... Hierarchy... Expanded...H05G; plasma technique Fulltext... Hierarchy... Expanded...H05H) [2]

|  | G21K 1/00 |
Arrangements for handling radiation or particles, e.g. focusing, moderating (radiation filters Fulltext... Hierarchy... Expanded...G21K 3/00) [2]

|  | G21K 1/02 |
· | using diaphragms, collimators [2]

|  | G21K 1/04 |
· · | using variable diaphragms, shutters, choppers [2]

|  | G21K 1/06 |
· | using diffraction, refraction, or reflection, e.g. monochromators (Fulltext... Hierarchy... Expanded...G21K 1/10, Fulltext... Hierarchy... Expanded...G21K 7/00 take precedence) [2]

|  | G21K 1/08 |
· | Deviation, concentration, or focusing of the beam by electric or magnetic means (electron-optical arrangements in electric discharge tubes Fulltext... Hierarchy... Expanded...H01J 29/46) [2]

|  | G21K 1/10 |
· | Scattering devices; Absorbing devices [2]

|  | G21K 1/12 |
· · | Resonant absorbers or driving arrangements therefor, e.g. for Mössbauer-effect devices [3]

|  | G21K 1/14 |
· | using charge exchange devices, e.g. for neutralising or changing the sign of the electrical charges of beams (producing or accelerating neutral particle beams Fulltext... Hierarchy... Expanded...H05H 3/00) [3]

|  | G21K 1/16 |
· | using polarising devices, e.g. for obtaining a polarised ion beam [3]

|  | G21K 3/00 |
Radiation filters, e.g. X-ray filters [2]

|  | G21K 4/00 |
Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens (photographic processes using X-ray intensifiers Fulltext... Hierarchy... Expanded...G03C 5/17; discharge tubes comprising luminescent screens Fulltext... Hierarchy... Expanded...H01J 1/62; cathode ray tubes for X-ray conversion with optical output Fulltext... Hierarchy... Expanded...H01J 31/50) [3]

|  | G21K 5/00 |
Irradiation devices (adaptations of reactors to facilitate irradiation Fulltext... Hierarchy... Expanded...G21C 23/00; discharge tubes for irradiating Fulltext... Hierarchy... Expanded...H01J 33/00, Fulltext... Hierarchy... Expanded...H01J 37/00) [2]

|  | G21K 5/02 |
· | having no beam-forming means [2]

|  | G21K 5/04 |
· | with beam-forming means [2]

|  | G21K 5/06 |
( transferred to Fulltext... Hierarchy... Expanded...G21K 5/10, covered by Fulltext... Hierarchy... Expanded...G21K 5/00 )

|  | G21K 5/08 |
· | Holders for targets or for objects to be irradiated [2]

|  | G21K 5/10 |
· | with provision for relative movement of beam source and object to be irradiated [3]

|  | G21K 7/00 |
Gamma- or X-ray microscopes [2]