1B89

Self-quenching Geiger-Müller counter designed for X-ray detection. A thin mica window provides sensitivity to X-rays while the tube supports relatively high counting rates for measurement and monitoring equipment.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

Self-quenching X-ray sensitive counter tube with a thin mica window and high counting-rate capability.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: -
Nominal heater current: -
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 0

GeigerMullerCounter

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1950 Victoreen

Published operating points and test conditions from this source.

SECTION 0

GeigerMullerCounter

Other

ThresholdVoltage
1400 V
Max
Operating Voltage
1500 V

Characteristic

PlateauLength
400 V
Minimum
PlateauSlope
10 %/100V
Maximum
RecoveryTime
50 us
Background
50 counts/min
WindowThickness
0.03 in