Well-type detectors

Low-background detectors.
Well Type Detector  

A well-type receptacle in NaI(Tl) detector provides maximum absorption of radiation from a sample by approximating 4p geometry.

Detectors with well-type crystals are used in medicine, biological research, environmental monitoring, etc.

We have different modifications of well-type detectors in productions. The basic types of serially produced well-type detectors and geometric dimensions of crystals are presented in the Table.  

Low-background detectors.

For detection and spectrometry of weak ionizing radiation and low activity levels of different radionuclides, low-background detectors are used which are characterized by a very low intrinsic background level.

The low background is attained by the use of both crystals having a low intrinsic background level and suitable construction materials.

The design features and scintillation characteristics of low background detectors (except for the background count rate) match those of standard and well-type detectors.

 

Well-type detectors.

Detector type and nomenclature

Scintillator dimensions (diameter x height) [mm]

Well dimensions (diameter x height) [mm]

SDN.64

30x40

17x38

SDN.69

40x40

20x38

SDN.83

40x40

12.5x27

SDN.83

40x50

12.5x37

SDN.83

63x63

10.0x37

SDN.83

80x50

18x27

SDN.83

80x80

18x47

SDN.83

100x100

35x70

SDN.83

160x160

57x100

SDN.83

200x200

75x150

125I spectrum for a NaI(Tl) well-type detector dia.40x40 mm (well dimension 12.5x27 mm).

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