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Point γ sources

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Technical Information

 

Radionuclides are placed between 2 hot-sealed polyester foils approximatly 125 μm thick each, then mounted in a plexiglass ring.

 

The radiological characteristics of the sources are measured with calibrated Nal scintillators or HPGe semi-conductors.

Standard geometries

EGSA
EGSE
EGSA © LEA - Cyril Crespeau
EGSE © LEA - Cyril Crespeau

Production Range

Catalog references

On request

Active diameter

3 mm • 0.12 in

From 3 to 50 mm

From 0.12 to 2 in

External diameter

25 mm  1 in

From 25 to 75 mm

From 1 to 3 in

38 mm  1.5 in

Activity

4 kBq  0.1 µCi

From 2 to 1 000 kBq

From 0.05 to 27 µCi

40 kBq  1.1 µCi

400 kBq  11 µCi

700 kBq  19 µCi

Radionucléide 

22Na, 57Co, 60Co, 88Y, 133Ba, 137Cs, 152Eu, 241Am, Mix 12ML01

110mAg, 139Ce, 51Cr, 134Cs, 59Fe, 131I, 54Mn, 239Pu, 113Sn (Non-exhaustive list)

Radionuclide

Activity

K=2 measurement uncertainty

Reference

 
 

Under COFRAC* accreditation

  

241Am

4 kBq • 0.11 µCi

≤ 3.5%

AM241 EGS [Type] 10

 

40 kBq • 1.1 µCi

≤ 3.5%

AM241 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 3.5%

AM241 EGS [Type] 20

 

133Ba

4 kBq • 0.11 µCi

≤ 2%

BA133 EGS [Type] 10

 

40 kBq • 1.1 µCi

≤ 2%

BA133 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 2%

BA133 EGS [Type] 20

 

700 kBq • 19 µCi

≤ 2%

BA133 EGS [Type] 25

 

57Co

4 kBq • 0.11 µCi

≤ 2%

CO57 EGS [Type] 10

 

40 kBq • 1.1 µCi

≤ 1.7%

CO57 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 1.7%

CO57 EGS [Type] 20

 

700 kBq • 19 µCi

≤ 2.5%

CO57 EGS [Type] 25

 

60Co

4 kBq • 0.11 µCi

≤ 2%

CO60 EGS [Type] 10

 

40 kBq • 1.1µCi

≤ 1.5%

CO60 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 1.5%

CO60 EGS [Type] 20

 

700 kBq • 19 µCi

≤ 1.5%

CO60 EGS [Type] 25

 

137Cs

4 kBq • 0.11 µCi

≤ 2.5%

CS137 EGS [Type] 10

 

40 kBq • 1.1 µCi

≤ 2%

CS137 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 2%

CS137 EGS [Type] 20

 

700 kBq • 19 µCi

≤ 2%

CS137 EGS [Type] 25

 

152Eu

4 kBq • 0.11 µCi

≤ 3%

 

EU152 EGS [Type] 10

 

40 kBq • 1.1 µCi

≤ 3%

 

EU152 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 3%

 

EU152 EGS [Type] 20

 

22Na

4 kBq • 0.11 µCi

≤ 2%

 

NA22 EGS [Type] 10

 

40 kBq • 1.1 µCi

≤ 2%

 

NA22 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 2%

 

NA22 EGS [Type] 20

 

700 kBq • 19 µCi

≤ 2%

 

NA22 EGS [Type] 25

 

88Y

4 kBq • 0.11 µCi

≤ 2%

 

Y88 EGS [Type] 10

 

40 kBq • 1.1 µCi

≤ 2%

 

Y88 EGS [Type] 15

 

400 kBq • 11 µCi

≤ 2%

 

Y88 EGS [Type] 20

 

700 kBq • 0.19 µCi

≤ 2%

 

Y88 EGS [Type] 25

 

12ML01**

30 kBq • 0.8 µCi

[3% ; 6% ]

 

12ML01 EGS [Type] 15

 
      

Standard manufacturing tolerance: ± 30%

IAEA Category : 5  ISO2919 Classification : C11111

How to compose the reference ?

Replace [Type] with the letter A or E according to the required geometry. For example: AM241 EGS A 20.

* Scope N°2-6386 available on www.cofrac.fr or upon request.

** 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. Other geometries are available on request.

Kits

EGS A sources are also available in kits containing 9 sources of 0.11μCi (4kBq), 1.1μCi (40kBq), 11μCi (400kBq), 19μCi (700kBq): 241Am, 57Co, 60Co, 51Cr, 137Cs, 54Mn, 22Na, 85Sr, 88Y. Other activities are available on request.


Coffret Gamma © LEA - Cyril Crespeau
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Technical Information

Radionuclides are deposited in the cavity of a rigid and leaktight plexiglass cylinder. The cavity is sealed with a plexiglass cap.

The radiological characteristics of the sources are measured with calibrated Nal scintillators, HPGe semi-conductors or ionization chambers.

 


Standard geometries

EGSB
EGSV
EGSB © LEA - Cyril Crespeau
EGSV © LEA - Cyril Crespeau

Production Range

Catalog references

On request

Active diameter

3 mm  0.12 in

From 3 to 50 mm

From 0.12 to 2 in

10 mm  0.4 in

External diameter

38 mm  1.5 in

From 25 to 75 mm

From 1 to 3 in

Activity

4 kBq  0.1 µCi

From 2 to 40 000 kBq

From 0.05 to 1 081 µCi

40 kBq  1.1 µCi

400 kBq  11 µCi

1 500 kBq  41 µCi

3 500 kBq  95 µCi

Radionuclide 

60Co, 133Ba, 137Cs, 152Eu, 241Am

110mAg, 139Ce, 51Cr, 134Cs, 59Fe, 131I, 54Mn, 239Pu, 113Sn (Non-exhaustive list)

Radionuclide

Activity

K=2 measurement uncertainty

Reference

 

241Am

4 kBq  0.1 µCi

≤ 5%*

AM241 EGS [Type] 10

 

40 kBq  1.1 µCi

≤ 5%*

AM241 EGS [Type] 15

 

400 kBq  11 µCi

≤ 5%*

AM241 EGS [Type] 20

 

133Ba

4 kBq  0.1 µCi

≤ 5%*

BA133 EGS [Type] 10

 

40 kBq  1.1 µCi

≤ 5%*

BA133 EGS [Type] 15

 

400 kBq  11 µCi

≤ 5%*

BA133 EGS [Type] 20

 

1 500 kBq  41 µCi

≤ 5%*

BA133 EGS [Type] 30

 

3 500 kBq  95 µCi

≤ 5%*

BA133 EGS [Type] 40

 

57Co

4 kBq  0.1 µCi

≤ 5%*

CO57 EGS [Type] 10

 

40 kBq  1.1 µCi

≤ 5%*

CO57 EGS [Type] 15

 

400 kBq  11 µCi

≤ 5%*

CO57 EGS [Type] 20

 

1 500 kBq  41 µCi

≤ 5%*

CO57 EGS [Type] 30

 

3 500 kBq  95 µCi

≤ 5%*

CO57 EGS [Type] 40

 

60Co

4 kBq  0.1 µCi

≤ 5%*

CO60 EGS [Type] 10

 

40 kBq  1.1 µCi

≤ 5%*

CO60 EGS [Type] 15

 

400 kBq  11 µCi

≤ 5%*

CO60 EGS [Type] 20

 

1 500 kBq  41 µCi

≤ 5%*

CO60 EGS [Type] 30

 

3 500 kBq  95 µCi

≤ 5%*

CO60 EGS [Type] 40

 

137Cs

4 kBq  0.1 µCi

≤ 5%*

CS137 EGS [Type] 10

 

40 kBq  1.1 µCi

≤ 5%*

CS137 EGS [Type] 15

 

400 kBq  11 µCi

≤ 5%*

CS137 EGS [Type] 20

 

1 500 kBq  41 µCi

≤ 5%*

CS137 EGS [Type] 30

 

3 500 kBq  95 µCi

≤ 5%*

CS137 EGS [Type] 40

 

152Eu

4 kBq  0.1 µCi

≤ 5%*

 

EU152 EGS [Type] 10

 

40 kBq  1.1 µCi

≤ 5%*

 

EU152 EGS [Type] 15

 

400 kBq  11 µCi

≤ 5%*

 

EU152 EGS [Type] 20

 

1 500 kBq  41 µCi

≤ 5%*

 

EU152 EGS [Type] 30

 

3 500 kBq  95 µCi

≤ 5%*

 

EU152 EGS [Type] 40

 
      

Standard manufacturing tolerance: ± 30%

IAEA Category : 5 • ISO2919 Classification : C22212

How to compose the reference ?

Replace [Type] with the letter B or V according to the required geometry. For example: CS137 EGS B 40.

* The calibration of sources can be performed on request, according to

COFRAC** accredited protocols. The measurement uncertainties at k=2

are lower than or equal to 3%.

** Scope N°2-6386 available on www.cofrac.fr or upon request.

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