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Wide area α and β sources - Discs

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The radionuclides are deposited on a 0.01 in (0.3 mm) thick aluminum substrate (anodized surface), fixed on a stainless steel support of thickness 0.1 in (2.6 mm) ensuring the rigidity of the assembly.

The radiological characteristics (emergent flux) of the sources are measured with a calibrated absolute proportional 2π sr counter.

 

It should be noted that the size of a calibration source should be adapted to suit the size of the detector to be controlled or calibrated : it is recommended not to use wide area sources to control detectors of a significantly different size from the detector itself. LEA does not provide any guarantee on results for other uses than those recommended.

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ESAK
Source alpha ESAL
Source alpha ESAM
ESAN
Source alpha ESAK © LEA - Cyril Crespeau
Source alpha ESAL © LEA - Cyril Crespeau
Source alpha ESAM © LEA - Cyril Crespeau
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Catalog references

On request

Active diameter

α

&

β

15 mm Ÿ 0.6 in 

From 15 to 160 mm

From 0.6 to 6.3 in

36 mm Ÿ 1.4 in

44 mm Ÿ 1.7 in

110 mm Ÿ 4.3 in

External diameter

α

&

β

30 mm Ÿ 1 in

From 20 to 170 mm

From 0.8 to 6.7 in

 

47 mm Ÿ 1.9 in

50 mm Ÿ 2 in

120 mmŸ 4.7 in

Activity

α

0.4 kBq Ÿ 0.01 µCi

From 0.1 to 2 kBq 

From 0.003 to 0.05 µCi

β

4 kBq Ÿ 0.11 µCi

De 0.5 à 8 kBq

From 0.014 to 0.22 µCi

Radionuclide 

α

238Pu, 239Pu, 241Am

233U, 235U, 238U

β

14C, 60Co, 90Sr, 137Cs, 147Pm

32P, 35S, 45Ca, 63Ni, 89Sr, 99Tc, 129I

 

Radionuclide

 

2π sr alpha flux

2π sr beta flux

k=2 measurement uncertainty

Equivalent activity

Reference

  

Under COFRAC* accreditation

  

α

241Am

200

α.s-1

≤ 6 %

0.4 kBq • 0.01 µCi

AM241 ESA [Type] 20

238Pu

200

α.s-1

≤ 6 %

0.4 kBq • 0.01 µCi

PU238 ESA [Type] 20

239Pu(1)

200

α.s-1

≤ 6 %

0.4 kBq • 0.01 µCi

PU239 ESA [Type] 20

β

14C

1 500

β.s-1

≤ 6 %

4 kBq • 0.11 µCi

C14 ESA [Type] 20

60Co

1 900

β.s-1

≤ 6 %

4 kBq • 0.11 µCi

CO60 ESA [Type] 20

137Cs

2 400

β.s-1

≤ 6 %

4 kBq • 0.11 µCi

CS137 ESA [Type] 20

147Pm

1 900

β.s-1

≤ 6 %

4 kBq • 0.11 µCi

PM147 ESA [Type] 20

90Sr + 90Y

2 500

β.s-1

≤ 6 %

4 kBq • 0.11 µCi

SR90 ESA [Type] 20

       
 

Standard manufacturing tolerance: ± 30%  

IAEA Category : 5 • ISO2919 Classification: C11111 

How to compose the reference ? 

Replace [Type] with the letter K, L, M or N according to the required geometry. For example: SR90 ESA K 20.

 

1) Source subject to export control on dual-use goods in accordance with CE 

Regulation 428/2009 from council of 5 May 2009: an end user certificate will notably be requested from the customer. 

 

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

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