Purpose:
• registration of gamma-ray spectra and identification of radionuclides;
• measuring radionuclide activity in building materials, mineral raw materials, waste products, food stuff and other materials in the Vessel Marinelli geometry.

    The gamma-ray spectrometer "ATOLL-1M" can operate both in laboratory conditions (with low- background protection) and in field conditions. The instrument has an effective system of thermal compensation.

    Delivery set:
The gamma-ray spectrometer "ATOLL-1M", notebook; specialized software; USB-cable; set of operational documentation, certificate about metrological documentation.

Specifications:

Range of registered of gamma-quantum energy	from 0.05 to 3.0 MeV
Relative energy resolution of Gamma-ray  line Cs137	Not more than 7,5 %
Integral nonlinearity, %	Not more than ±1
Maximum permissible major relative measurement error of samples activity in 1 litre Marinelli vessel at 1 hour exposure time , %	Not more than ±30
Minimum detectable activity of Cs137 at 1 hour exposure time, Bq/kg	Not more than 2 ( in 10-fold shielded chamber )
Detector material	Nal(TI) diam.63x63
Version of detector unit	Sealed
Maximum statistical charge , c-1	Not less than 104
Number of channels of the amplitude analyser	1024
Channel capacity	1000000
Reducing integral background count of detector block in the low background protection	10 times
The gamma-ray spectrometer "ATOLL-1M" is powered from computer by means of USB cable, consumption current	Not more than 100 mA
Mode of operation	Round-the-clock
Average lifetime of spectrometer	6 years
Operation conditions:
ambient temperature	From minus 20°C up to 35°C
relative humidity	Up to 95 %
Warranty period	18 months