Detectors

NaI Detectors

Device type: Scintillation detectors

NaI detectors are probably the most widely used detectors for gamma spectroscopy. They have sufficient resolution, they are available in relatively large crystal sizes, to provide excellent sensitivity at moderate prices. The resolution of the detectors is typically 5.8% - 7% (relative half-width at 662 keV). Characteristically, the smaller size detectors mark a better resolution.

Nal Detector 76x76mm

Nal Detector 40x40mm

Nal Detector 125x70mm

NaI Detectors with Jedec connector

General characteristics of the detectors distributed by GBS Elektronik GmbH

The detector contains the crystal, photomultiplier, voltage divider and preamplifier in a housing
The detector consists of PMT and crystal in a housing with Jedec connector
The cover of the crystal has a wall thickness of 1 mm and is made of aluminum

Connectors

SHV for high voltage (typical -600...-1000 V)
BNC for preamplifier signal output
Sub-D9 for preamplifier power supply (+/-12 V)
3m connection cable available
Jedec B14 or Jedec B12

Accessories

Functional Tripod for upright placement of detector
Customized lead shielding

Standard Sizes

40*40 mm
51*51 mm (2" * 2")
63*63mm (2.5"*2.5")
76*76 mm (3" * 3")

Special Sizes

100*100mm, with a hole (well-type), for the detection of the lowest activity in samples.
125*70 mm, very sensitive, for spectroscopic portal monitors or terrain measurements.
Other sizes and designs are also available upon request.

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References of GBS Elektronik GmbH