G21K   1/00		γΥ갷֡㡥«ޤϸ®Σ	Arrangements for handling particles or ionising radiation, e.g. focusing or moderating  	3953
G21K   1/02		ʤꡤ᡼ѤΡΣ	using diaphragms, collimators	3838
G21K   1/04		ѹʤꡤååѡѤΡΣ	using variable diaphragms, shutters, choppers	2063
G21K   1/06		ޡޤޤȿͤѤΡ㡥Υ᡼ʣǣˣǣˣͥˡΣ	using diffraction, refraction, or reflection, e.g. monochromators(<b>G21K1/10</b>, <b>G21K7/00</b> take precedence)	4425
G21K   1/08		ŵŪޤϼŪʤˤӡиޤϽ«ŻҴɤŻҸ֣ȣʣˡΣ	Deviation, concentration, or focusing of the beam by electric or magnetic means(electron-optical arrangements in electric discharge tubes <b>H01J29/46</b>)	617
G21K   1/087		ŵŪʤˤΡΣ	by electrical means	428
G21K   1/093		ŪʤˤΡΣ	by magnetic means	1467
G21K   1/10		֡ۼ֡Σ	Scattering devices; Absorbing devices	1257
G21K   1/12		ĵۼΤޤϤΤζư㡥᥹Х֡Σ	Resonant absorbers or driving arrangements therefor, e.g. for M&ouml;ssbauer-effect devices	655
G21K   1/14		Ųٸ֤ѤΡ㡥ӡŲ٤ޤ϶Ѥ뤿ΤΡΣ	using charge exchange devices, e.g. for neutralising or changing the sign of the electrical charges of beams	242
G21K   1/16		ʬ˲֤ѤΡ㡥ʬˤӡ뤿ΤΡΣ	using polarising devices, e.g. for obtaining a polarised ion beam	108
G21K   1/20		γҤĤޤĤ줿γҤ갷Ρ㡥ȥåסΣ	for confining charged particles or handling confined charged particles, e.g. ion traps	
G21K   1/30		γҤĤޤĤ줿γҤ갷Ρ㡥ҥȥåסΣ	for confining neutral particles or handling confined neutral particles, e.g. atom traps	
G21K   3/00		Υե륿㡥ե륿Σ	Ionising radiation filters, e.g. X-ray filters	836
G21K   4/00		γҤޤΥζʬۤĻѴ뤿Ѵ꡼㡥ꥸ꡼Σ	Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens	5985
G21K   5/00		ȼ֡ʾȼͤưפˤ뤿θϧŬѣǣãȼͤΤŴɣȣʣȣʣˡΣ	Irradiation devices(adaptations of reactors to facilitate irradiation <b>G21C23/00</b>; discharge tubes for irradiating <b>H01J33/00</b>, <b>H01J37/00</b>)	5211
G21K   5/02		ӡʤ⤿ʤΡΣ	having no beam-forming means	2845
G21K   5/04		ӡʤĤΡΣ	with beam-forming means	4680
G21K   5/08		ȼͤ륿åȤޤʪΤݻΣ	Holders for targets or for objects to be irradiated	2015
G21K   5/10		ӡȼʪδ֤бưΡΣ	with provision for relative movement of beam source and object to be irradiated	2553
G21K   7/00		ޤϣΣ	Gamma ray or X-ray microscopes	1485
