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 H05G; plasma technique H05H)  [2]
 G21K 1/00
Arrangements for handling radiation or particles, e.g. focusing, moderating (radiation filters 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 (G21K 1/10, 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 H01J 29/46)  [2]
 G21K 1/10
·  Scattering devices; Absorbing devices  [2]
 G21K 3/00
Radiation filters, e.g. X-ray filters  [2]
 G21K 5/00
Irradiation devices (discharge tubes for irradiating H01J 33/00, H01J 37/00)  [2]
 G21K 5/02
·  having no beam-forming means  [2]
 G21K 5/04
·  with beam-forming means  [2]
 G21K 5/06
·  with provision for relative movement between the radiation source and the object to be irradiated  [2]
 G21K 5/08
·  Holders for targets or for objects to be irradiated  [2]
 G21K 7/00
Gamma- or X-ray microscopes  [2]