Ion sources; Ion guns

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Ion beam tubes > Ion sources; Ion guns

CPC:

Ion beam tubes (H01J25/00, H01J33/00, H01J37/00 take precedence; particle accelerators H05H) > Ion sources; Ion guns

Of 9 combined children, 6 exist in both systems.

3 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

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H01J 27/022 +1 CPC CPC only CPC only
H01J 27/026 CPC only CPC only
H01J 27/028 CPC only CPC only
H01J 27/04 using reflex discharge, e.g. Penning ion sources since 1980 IPC+CPC Available in IPC and CPC
H01J 27/08 using arc discharge since 1980 IPC+CPC Available in IPC and CPC
H01J 27/16 using high-frequency excitation, e.g. microwave excitation since 1980 IPC+CPC Available in IPC and CPC
H01J 27/20 using particle bombardment, e.g. ionisers since 1980 +1 CPC IPC+CPC Available in IPC and CPC
H01J 27/24 using photo-ionisation, e.g. using laser beam since 1980 IPC+CPC Available in IPC and CPC
H01J 27/26 using surface ionisation, e.g. field effect ion sources, thermionic ion sources (H01J27/20, H01J27/24 take precedence) since 1980 IPC+CPC Available in IPC and CPC