Application
Portable multifunction scintillation gamma spectrometer Maa-X is designed to measure:
- specific activity of Cs-134 and Cs-137 radionuclides in soils and grounds;
- specific activity of Cs-137, Cs-134, I-131 radionuclides in water, food products, forestry products, liquid radioactive waste and other;
- content of natural radionuclides K-40, Ra-226, Th-232;
- ambient dose equivalent rate of gamma radiation.
Gamma spectrometer Maa-X also is intended for identification of radionuclides: Cs-134, Cs-137, I-131, K-40, Ra-226, Th-232.
In situ measurements are made for 2π and 4π geometries without preliminary sampling with GPS reference.
Datasheet for Maa-X
Operating principle
Gamma spectrometer
Gamma spectrometer in field conditions
Gamma spectrometer in field conditions
Detection unit in a shock-resistant, dust-and-moisture-proof container registers gamma radiation of controlled radionuclides. Detection device sends spectrometric data to the Tablet PC by wireless communication channel (BlueTooth, Wi-Fi) for displaying on screen in software ASW2.
Instrumental spectra processing algorithm in the Tablet PC software is capable to display radioisotope composition data as specific or surface activity of certain radionuclides or their concentration, specific effective activity of natural radionuclides.
The measurement results can be saved on the map.
Specification
Detector type
Scintillation NaI(Tl): Ø40x40 mm; Ø63x63 mm;
76x76 mm; Ø100x100 mm
Energy range
50 keV – 3 MeV
Measurement ranges (2π geometry)
- Surface activity of Cs-134 and Cs-137
- Specific activity of Cs-134 and Cs-137 by in situ method
- Specific effective activity of K-40, Ra-226, Th-232
4 – 3700 kBq/sq.m (0.1 – 100 Ci/sq.km)
0.1 – 10 kBq/kg
0.05 – 1000 kBq/kg
Measurement ranges (4π geometry)
- Surface activity of Cs-134 and Cs-137
- Specific activity of I-131
- Specific effective activity of K-40, Ra-226, Th-232
0.05 – 1000 kBq/kg
0.03 – 1000 kBq/kg
0.05 – 1000 kBq/kg
Typical relative energy resolution at 661.7 keV from Cs-137
< 8%
Measurement range of ambient dose equivalent rate
0.03 – 130 µSv/h
Sensitivity to Cs-137 gamma radiation
≥2200 (cps/µSv)/h
Integral nonlinearity
±1 %
Protection class
IР67
Working temperature range
-20°С...+50°С
Overall dimensions
Ø168x440 mm
10'' (Tablet PC)
Internal battery run time
≥9 h
Number of ADC channels
1024,2048,4096
PC interface
BlueTooth, Wi-Fi
Software
ASW2
