Scintillation detectors of general purpose NaI (TI), Cs (TI), Cs (Na) crystals are used for registration and spectrometry of gamma-radiation in the nuclear-physical equipment working in the ordinary laboratory conditions. The cylinder-shaped crystals in detectors of general purpose are from 10 up to 200 mm in diameter and from 10 up to 200 mm in height. The typical values of the energy sanction of standard detectors when irradiating of the isotope 137CS are 6,5-10 % for NaI (TI), and 7-11 % for CSI (TI), Cs (Na) (depending on sizes and qualification of the detector).

Scin-blocks form the pair: scintillator – photoelectronic multiplier),put into common hermetic metal frame. The typical sizes of crystals in scin-blocks (diameter х height, mm) are the following: 25х25, 40х40, 50х50, 63х63, 76х76, 150х100, 50х150, 50х250. Scin-blocks having other parameters are made at the request of the Customer. The energy sanction of scin-blocks is from 7% up to 12% depending on the size of a crystal and parameters of the used photo-electronic electronic multiplier.

Detectors and scin-blocks for the geophysical equipment are dedicated to hard operation conditions, when thermal, shock and vibration loads acting.

Such detectors are used, in particular, at radioactive logging of oil and ore wells.

• size of a scintillator (the crystal NaI (TI) or Cs (Na)): from 10 up to 63 mm in diameter and from 10 up to 300 mm in height; - working temperatures from –50^o C to 155^оС, 175^оС, up to 200^оС for various updatings of detectors;
• stability to mechanical loadings: impacts up to 100 g, 6-12 мс;
• vibration: up to 20 g, 10 - 1000 gh;

Detectors are intended for work in an accounting or spectrometer mode.

The detectors and scin-blocks for a drilling measuring equipment, satisfying to the specific requirements the Customer on the size, thermal and mechanical durability, are made.

Other types of detectors made by the of the consumers, order are the following:

• Detectors and scin-blocks with various-sizes and various-configuration axial shafts, intended for registration of low-scale radiation of small-volume samples;
• Scin-detectors shaped in rectangular or hexagonal prisms, intended for application in a high-energy physics, in aerial gamma-spectroscopy researches, etc.;
• Pair scin-block "scintillator – photodiode" consisting of scintilator CsI (TI) + PIN-photodiode, built-in charge-sensitive intensifier, and an amplifier-shaper (at the request of the Customer).

Advantages of the setup (in comparison with traditional system) are the following:

• Compactness of a design, high stability of a signal, absence of a high-voltage feeding, tolerance to magnetic fields, etc.

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