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γ sources in charcoal filter cartridges

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Our active charcoal can be impregnated in two ways:

  • Surface impregnation, a radioactive disk is placed in contact with one of the inside surfaces of the housing to simulate surface contamination (E geometry)
  • Pore volume impregnation, the activated charcoal is homogeneously impregnated (D geometry)

Source activity is measured with calibrated Nal scintillators or HPGe semi-conductors.


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EDCD
EDCE
EDC © LEA - Cyril Crespeau
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Catalog references

On request

Container

Cartridge of useful volume 2.68 in3

Any volume of activated charcoal

Activity

4 kBq  0.1 µCi

From 1 to 1 000 kBq

From 0.03 to 27 µCi

Radionuclide

133Ba, 137Cs, 152Eu, Mix 12ML01

51Cr, 54Mn, 57Co, 60Co, 65Zn, 85Sr, 88Y, 109Cd, 113Sn, 134Cs, 139Ce, 241Am (Non-exhaustive list)

Radionuclide

Activity

K=2 measurement uncertainty

Reference

133Ba

4 kBq  0.11 µCi

≤ 5%

BA133 EDC D 10

4 kBq  0.11 µCi 

≤ 5%

BA133 EDC E 10

137Cs

4 kBq  0.11 µCi

≤ 7%

CS137 EDC D 10

4 kBq  0.11 µCi

≤ 8%

CS137 EDC E 10

152Eu

4 kBq  0.11 µCi

≤ 5%

EU152 EDC D 10

4 kBq  0.11 µCi

≤ 5%

EU152 EDC E 10

12ML01*

18,5 kBq  0.5 µCi

[6% ; 8% ]

12ML01 EDC D 11

18,5 kBq  0.5 µCi

[ 6% ; 8% ]

12ML01 EDC E 11

    

Standard manufacturing tolerance: ± 30%

IAEA Category : 5 • ISO2919 Classification : C11111

 

* The 12ML01 mixture – 241Am, 109Cd, 139Ce, 57Co, 60Co, 51Cr, 137Cs, 113Sn, 54Mn, 65Zn, 85Sr, 88Y – generates around 15 peaks over an energy range from 60 keV to 1836 keV. The quantity of each radionuclide is chosen so that the counting rates of the main peak of each radionuclide are the same order of magnitude. 

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