TECHNICAL INFORMATION
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.
STANDARD GEOMETRIES
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Catalog references |
On request |
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Active diameter |
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α&β |
15 mm |
From 15 to 160 mm
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36 mm |
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44 mm |
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110 mm |
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External diameter |
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α&β |
30 mm |
From 20 to 170 mm
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47 mm |
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50 mm |
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120 mm |
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Activity |
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α |
0.4 kBq |
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β |
4 kBq |
From 0.5 to 8 kBq
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Radionuclide |
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α |
238Pu, 239Pu, 241Am |
233U, 235U, 238U |
β |
14C, 60Co, 90Sr, 137Cs, 147Pm |
32P, 35S, 45Ca, 63Ni, 89Sr, 99Tc, 129I |
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Radionuclide |
2π sr alpha flux 2π sr beta flux |
k=2 measurement uncertainty |
Equivalent activity |
Reference |
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Under COFRAC* accreditation |
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α |
241Am |
200 |
α.s-1 |
≤ 6 % |
0.4 kBq |
AM241 ESA [Type] 20 |
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238Pu |
200 |
α.s-1 |
≤ 6 % |
0.4 kBq |
PU238 ESA [Type] 20 |
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239Pu(1) |
200 |
α.s-1 |
≤ 6 % |
0.4 kBq |
PU239 ESA [Type] 20 |
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β |
14C |
1 500 |
β.s-1 |
≤ 6 % |
4 kBq |
C14 ESA [Type] 20 |
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60Co |
1 900 |
β.s-1 |
≤ 6 % |
4 kBq |
CO60 ESA [Type] 20 |
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137Cs |
2 400 |
β.s-1 |
≤ 6 % |
4 kBq |
CS137 ESA [Type] 20 |
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147Pm |
1 900 |
β.s-1 |
≤ 6 % |
4 kBq |
PM147 ESA [Type] 20 |
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90Sr + 90Y |
2 500 |
β.s-1 |
≤ 6 % |
4 kBq |
SR90 ESA [Type] 20 |
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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. |
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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. |
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* Scope N°2-6386 available on www.cofrac.fr or upon request. |
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