DIFF Main Group
G21K 1/00 Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
Introduced: September 1968
IPC and CPC are identically structured here. All 8 subcodes exist in both systems.
5 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
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- G21K 1/06 using diffraction, refraction or reflection, e.g. monochromators (G21K1/10, G21K7/00 take precedence) since 1974 +3 CPC IPC+CPC Available in IPC and CPC
- G21K 1/08 Deviation, concentration or focusing of the beam by electric or magnetic means (electron-optical arrangements in electric discharge tubes H01J29/46; ) since 1974 IPC+CPC Available in IPC and CPC
- G21K 1/10 Scattering devices; Absorbing devices; Ionising radiation filters since 1974 IPC+CPC Available in IPC and CPC
- 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 H05H3/00) since 1980 IPC+CPC Available in IPC and CPC
- G21K 1/16 using polarising devices, e.g. for obtaining a polarised beam since 1980 IPC+CPC Available in IPC and CPC
- G21K 1/20 for confining charged particles or handling confined charged particles, e.g. ion traps since 2026 IPC+CPC Available in IPC and CPC
- G21K 1/30 for confining neutral particles or handling confined neutral particles, e.g. atom traps since 2026 IPC+CPC Available in IPC and CPC