Gamma, Beta and Alpha Spectrometer – Radiometer TRIO

DESCRIPTION

Gamma-, beta- and alpha – spectrometer radiometer TRIO is intended for measuring energy distribution of gamma- and beta – radiation, identify gamma-emitting radionuclides, and also for measuring the activity (specific and  volumetric activity) natural radionuclides 226Ra, 232Th, 40K, 222Rn, and technogenic radionuclides (137Cs, 134Cs, 60Co, 99mTc, 90Sr and etc.) in the soil samples, rocks, vegetation, water, food, wood, building materials, chemical industry materials, alloys, scrap metal and other technological  products. Also it is used for measuring gross specific activity of beta- and alpha- emitting radionuclides in water.

Description

Application

Gamma-, beta- and alpha – spectrometer TRIO is intended for measuring energy distribution of gamma- and beta – radiation, identify gamma-emitting radionuclides, and also for measuring the activity (specific and  volumetric activity) natural radionuclides 226Ra, 232Th, 40K, 222Rn, and technogenic radionuclides (137Cs, 134Cs,  60Co, 99mTc, 90Sr and etc.) in the soil samples, rocks, vegetation, water, food, wood, building materials, chemical industry materials, alloys, scrap metal and other technological  products. Also it is used for measuring gross specific activity of beta- and alpha- emitting radionuclides in water.

COMPLETE SET

  • Multichannel analyzer (MCA) Polynom , also can be embedded in the detector
  • Spectrometric detectors of gamma – radiation based on crystal NaI(Tl): BDEG-63-63 (А) (BDEG-76-76, BDEG-150-100, character ‘А’-embedded MCA)
  • Spectrometric detectors of gamma – radiation based on crystal CsI(Tl): BDEG-50-50-CS (BDEG-40-40-CS, BDEG-25-25-CS)
  • Spectrometric detectors of gamma – radiation based on crystal LaBr3(Ce): BDEG-38-38-LB (BDEG-25-25-LB, BDEG-51-51-LB, BDEG-76-76-LB)
  • Spectrometric detectors of beta – radiation based on plastic scintillator (polysterene) : BDEB-70-10
  • Radiometric detectors of beta – radiation – radiation based on plastic scintillator (polysterene): BDB-70-1
  • Spectrometric Si-detectors of alpha – radiation:  BDEA-25-1
  • Radiometric detectors of alpha – radiation based on ZnS(Ag): BDA-70-1
  • Low-background protective chambers for gamma detector, beta detectors and alpha detectors
  • Vacuum chamber from stainless steel and vacuum gauge with pressure display on the indicator
  • Beakers and vessels for measurements
  • Software for spectrometric analysis

SPECIFICATION

Parameter Value
Type of detectors:
– BDEG-63-63
– BDEG-76-76 (or other sizes)
– BDEG-150-100
– BDEG-50-50-CS (or other sizes)
– BDEG-38-38-LB (or other sizes)
– BDEB-70-10
– BDA-70-1
NaI(Tl) Ø63x63mm
NaI(Tl) Ø76x76mm
NaI(Tl) Ø150x100mm
CsI(Tl) Ø50x50mm
LaBr3(Ce) Ø38x38mm
Polystyrene Ø70x10mm
ZnS(Ag) Ø70x1mm
Energy range, keV
– for gamma radiation
– for beta radiation
– for alpha radiation
40-3000
65-4000
1500-10000
Relative energy resolution on the line 661,7 keV, measuring with radionuclide source 137 Cs, %, no more than
– for BDEG-63-63
– for BDEG-76-76
– for BDEG-150-100
– for BDEG-50-50-CS
– for BDEG-38-38-LB

8,5
9
12
9
3,5

Relative energy resolution on the conversion electron line 624 keV of radionuclide 137 Cs, %, no more than
– for BDEB-70-10
15
Integral nonlinearity in the gamma energy range from 40 to 3000 keV,%, not more then 1
Integral nonlinearity in the beta energy range from 65 to 4000 keV,%, not more then 2
Detection sensitivity for beta radiation of radionuclide 90 Sr-90 Y for the thin source located at 3 mm from the end surface of the detector within the working range of 550-2300 keV , cps/Bq, no less then
– for BDEB-70-10
0,15
Detection sensitivity for alpha radiation of radionuclide 239 Pu for the thin source located at 3mm from the end surface of the detector, cps/Bq, no less then
– for BDA-70-1
0,3
Maximum throughput, cps, no less than 5∙104
Minimum measurable activity of the radionuclide 137 Cs at the ambient dose rate of no more than 0,2 µSv/h on the protection chamber surface and measurement time of 1 hour, Bq, not more then
– for BDEG-63-63
– for BDEG-76-76
– for BDEG-150-100
3
2
2
Minimum measurable activity of the radionuclide 90 Sr at the ambient dose rate of no more than 0,2 µSv/h on the protection chamber surface and measurement time of 3 hour, Bq, not more
– for BDEB-70-10
1
Minimum measurable activity of the radionuclide 239 Pu at the ambient dose rate of no more than 0,2 µSv/h on the protection chamber surface and measurement time of 3 hour, Bq, no more
– for BDA-70-1
0,01
Measuring range of activity for 137 Cs , Bq
– for BDEG-63-63
– for BDEG-76-76 –
for BDEG-150-100
Permissible basic relative error for measuring activities does not exceed 30% (P=0,95). The measuring range can be extended in case of sample concentrating or impoverishment.
5 – 8·105
3 – 5·105
2 – 3·105
Measuring range of activity for 90 Sr , Bq
– for BDEB-70-10
Permissible basic relative error for measuring activities does not exceed 30% (P=0,95). The measuring range can be extended in case of sample concentrating or impoverishment.
2 – 1,2·106
Measuring range of activity for 239 Pu in a thin source, Bq
– for BDA-70-1
Permissible basic relative error for measuring activities does not exceed 10% (P=0,95).
0,05 – 1,5·105
Measuring range of gross specific activity of alpha radiating radionuclide in water, Bq/kg
– for BDA-70-1
Permissible basic relative error for measuring activities does not exceed 50% (P=0,95).
0,05 – 400
Instability of spectrometer indications (energy conversion characteristic) for 24 hours of a continuous operation, %, not more ±1
Operation conditions:
– ambient air temperature, 0С
– relative air humidity, %
– atmospheric pressure in the range of, kPa
– intensity of magnetic fields of the permanent and variable grid frequencies, А/m
from +10 to +40
up to 80
from 84 to 106,7
up to 40