Tubes for determining the presence, intensity, density or energy of radiation or particles ( ; photoelectric discharge tubes not involving the ionisation of a gas H01J40/00 )

Introduced: January 1980

Title

Titles differ between systems:

IPC: Tubes for determining the presence, intensity, density or energy of radiation or particles

CPC: Tubes for determining the presence, intensity, density or energy of radiation or particles ( ; photoelectric discharge tubes not involving the ionisation of a gas H01J40/00 )

Full Title

Full titles differ between systems:

IPC:

Tubes for determining the presence, intensity, density or energy of radiation or particles

CPC:

Tubes for determining the presence, intensity, density or energy of radiation or particles ( ; photoelectric discharge tubes not involving the ionisation of a gas H01J40/00 )

Of 9 combined children, 6 exist in both systems.

3 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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H01J 47/001 +2 CPC CPC only CPC only
H01J 47/007 CPC only CPC only
H01J 47/008 CPC only CPC only
H01J 47/02 Ionisation chambers since 1980 +4 CPC IPC+CPC Available in IPC and CPC
H01J 47/06 Proportional counter tubes since 1980 +3 CPC IPC+CPC Available in IPC and CPC
H01J 47/08 Geiger-Müller counter tubes since 1980 IPC+CPC Available in IPC and CPC
H01J 47/10 Spark counters (H01J47/14 takes precedence; spark gaps H01T) since 1980 IPC+CPC Available in IPC and CPC
H01J 47/12 Neutron detector tubes, e.g. BF3 tubes since 1980 +5 CPC IPC+CPC Available in IPC and CPC
H01J 47/14 Parallel electrode spark or streamer chambers; Wire spark or streamer chambers since 1980 IPC+CPC Available in IPC and CPC