SEG-002-“AKP-P” Semi-conductor gamma spectrometer

Semi-conductor gamma-spectrometer SEG-002-“AKP-P”, made on the detector base from pure germanium, is designed for radionuclides identification in the compound isotopes mixture in counting samples, determination of their specific activity or abundance by spectrum of external gamma-emanation.
PURPOSE
Semi-conductor gamma-spectrometer SEG-002-“AKP-P”, made on the detector base from pure germanium, is designed for radionuclides identification in the compound isotopes mixture in counting samples, determination of their specific activity or abundance by spectrum of external gamma-emanation.

COMPOSITION
  • P-type semi-conductor gamma-detector on the HP(Ge) base in the Dewar container with preliminary amplifier and refrigerated input cascade.
  • Passive low-background composition detector shielding.
  • Spectrometry section.
  • ADC.
  • IBM compatible computer.
  • “AKWin” software.
  • Set of cables.
  • Nitrogen charge device.
  • Nitrogen level sensor.
  • Measuring vessels.

PERFORMANCE
Gamma-type detection unitBDEG-35190
Energy range of registered gamma-emission, keV40÷10000
Registration efficiency, % to NaJ

Energy resolution:
for 122 keV, eV875
for 1.3 MeV, keV1.9
MDA by 137Cs for 1 hour
for “Marinelli vessel” 1 l, Bq/kg0.12
for “Denta” vessel 0.13 l Bq/kg1.0
Peak/Compton ratio60:1
Number of channels ADC, not less than8192
Integral non-linearity of conversion function, %<0.05
Differential non-linearity in % of full scale, %<1

Forming constant:
for heavy loads, ms1
for light loads, ms6
Automatic voltage raising, V0÷4000
Thickness of passive shielding lead, mm100
Maximum “Marinelly” vessel volume, l4
Shield, protecting from K-alpha lead
copper, mm0.1
cadmium, mm0.1

DETECTOR TECHNICAL CHARACTERISTICS
Model NoEffic.(%)ResolutionPeak-to- Compton RatioPeak Shape
__122 keV,
(keV) 
1.33 MeV,
(keV)
_FW.1M 
FWHM
FW.02M/ 
FWHM
BDEG-35190350,8751,960:11,92,65
GEM35P4350,851,8560:11,92,6

APPLICATION
 A Coaxial HPGe Detector with Lead Shield is used to measure the specific gamma radiation of radionuclides from various types of environmental objects such as rocks, minerals, sludge, slag, soil, plant, sediment and particulate matter in air.

 FEATURES
  • Adopting precision gamma-spectrometry methods; 
  • Radionuclide identification and determination of their specific activity;
  • Low level of instrumental background;
  • Low threshold for radionuclide detection;
  • Separate and simultaneous measurement of activity of 100 radionuclides
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