G21K1/00	7	Arrangements for handling particles or ionising radiation, e.g. focusing or moderating	G21K1/00	G21K1/00		801
G21K1/02	8	using diaphragms, collimators	G21K1/02	G21K1/02		1082
G21K1/025	9	{using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation}	G21K1/02	G21K1/02		1474
G21K1/04	9	using variable diaphragms, shutters, choppers	G21K1/04	G21K1/04		1006
G21K1/043	10	{changing time structure of beams by mechanical means, e.g. choppers, spinning filter wheels}	G21K1/04	G21K1/04		282
G21K1/046	10	{varying the contour of the field, e.g. multileaf collimators}	G21K1/04	G21K1/04		392
G21K1/06	8	using diffraction, refraction or reflection, e.g. monochromators (G21K1/10, G21K7/00 take precedence)	G21K1/06	G21K1/06		1359
G21K1/062	9	{Devices having a multilayer structure}	G21K1/06	G21K1/06		775
G21K1/065	9	{using refraction, e.g. Tomie lenses}	G21K1/06	G21K1/06		85
G21K1/067	9	{using surface reflection, e.g. grazing incidence mirrors, gratings (multilayer mirrors G21K1/062)}	G21K1/06	G21K1/06		348
G21K1/08	8	Deviation, concentration or focusing of the beam by electric or magnetic means (electron-optical arrangements in electric discharge tubes H01J29/46; {details, e.g. electric or magnetic deviating means for direct voltage accelerators or in accelerators using single pulses H05H5/02; arrangements for injecting particles into orbits H05H7/08; arrangements for ejecting particles from orbits H05H7/10})	G21K1/08	G21K1/08		209
G21K1/087	9	by electrical means	G21K1/087	G21K1/087		197
G21K1/093	9	by magnetic means	G21K1/093	G21K1/093		562
G21K1/10	8	Scattering devices; Absorbing devices; Ionising radiation filters	G21K1/10	G21K1/10		1163
G21K1/12	9	Resonant absorbers or driving arrangements therefor, e.g. for Moessbauer-effect devices {(motors with reciprocating, oscillating or vibrating magnet, armature or coil system in general H02K33/00)}	G21K1/12	G21K1/12		48
G21K1/14	8	using charge exchange devices, e.g. for neutralising or changing the sign of the electrical charges of beams (producing or accelerating neutral particle beams H05H3/00)	G21K1/14	G21K1/14		148
G21K1/16	8	using polarising devices, e.g. for obtaining a polarised beam {(ion sources, ion guns H01J27/02; polarised targets for producing nuclear reactions H05H6/005)}	G21K1/16	G21K1/16		91
G21K1/20	8	for confining charged particles or handling confined charged particles, e.g. ion traps	G21K1/20	G21K1/20		
G21K1/30	8	for confining neutral particles or handling confined neutral particles, e.g. atom traps	G21K1/30	G21K1/30		
G21K4/00	7	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 G03C5/17; discharge tubes comprising luminescent screens H01J1/62; cathode ray tubes for X-ray conversion with optical output H01J31/50)	G21K4/00	G21K4/00		2129
G21K2004/02	8	{characterised by the external panel structure}	G21K4/00	G21K4/02		41
G21K2004/04	8	{with an intermediate layer}	G21K4/00	G21K4/04		97
G21K2004/06	8	{with a phosphor layer}	G21K4/00	G21K4/06		459
G21K2004/08	8	{with a binder in the phosphor layer}	G21K4/00	G21K4/08		95
G21K2004/10	8	{with a protective film}	G21K4/00	G21K4/10		134
G21K2004/12	8	{with a support}	G21K4/00	G21K4/12		133
G21K5/00	7	Irradiation devices (discharge tubes for irradiating H01J37/00)	G21K5/00	G21K5/00		577
G21K5/02	8	having no beam-forming means	G21K5/02	G21K5/02		472
G21K5/04	8	with beam-forming means	G21K5/04	G21K5/04		1001
G21K5/08	8	Holders for targets or for other objects to be irradiated	G21K5/08	G21K5/08		398
G21K5/10	8	with provision for relative movement of beam source and object to be irradiated	G21K5/10	G21K5/10		701
G21K7/00	7	Gamma- or X-ray microscopes	G21K7/00	G21K7/00		331
G21K2201/00	7	Arrangements for handling radiation or particles	CPCONLY	G21K2201/00		12
G21K2201/06	8	using diffractive, refractive or reflecting elements	CPCONLY	G21K2201/06		110
G21K2201/061	9	characterised by a multilayer structure	CPCONLY	G21K2201/061		234
G21K2201/062	9	the element being a crystal	CPCONLY	G21K2201/062		256
G21K2201/064	9	having a curved surface	CPCONLY	G21K2201/064		379
G21K2201/065	9	provided with cooling means	CPCONLY	G21K2201/065		68
G21K2201/067	9	Construction details	CPCONLY	G21K2201/067		659
G21K2201/068	9	specially adapted for particle beams	CPCONLY	G21K2201/068		102
G21K2207/00	7	Particular details of imaging devices or methods using ionizing electromagnetic radiation such as X-rays or gamma rays	CPCONLY	G21K2207/00		41
G21K2207/005	8	Methods and devices obtaining contrast from non-absorbing interaction of the radiation with matter, e.g. phase contrast	CPCONLY	G21K2207/005		375
