Alpha point sources (EAS) are in the form of a stainless steel disk, unmounted (Type C or D) or sealed on an aluminum ring (Type A or B), at the center of which the radionuclides are electroplated.
Radiological characteristics of the sources are measured with a calibrated grid cell detector.
STANDARD GEOMETRIES
PRODUCTION RANGE
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Catalog references |
On request |
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Active diameter |
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15 mm |
From 5 to 75 mm
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External diameter |
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25 mm |
From 25 to 90 mm
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30 mm |
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38 mm |
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Activity |
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0.3 kBq |
0.01 - 8 kBq
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0.8 kBq |
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3 kBq |
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Radionuclide |
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233U, 238Pu, 239Pu, 241Am, 244Cm |
235U, 238U |
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Radionuclide |
2π sr alpha flux |
k=2 measurement uncertainty |
Equivalent activity |
Reference |
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Under COFRAC* accreditation |
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Mix(1) 239Pu, 241Am, 244Cm |
400 |
α.s-1 |
≤ 1.5% |
0.8 kBq |
9ML04 EAS [Type] 25 |
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241Am |
150 |
α.s-1 |
≤ 1.5% |
0.3 kBq |
AM241 EAS [Type] 20 |
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1500 |
α.s-1 |
≤ 1.5% |
3 kBq |
AM241 EAS [Type] 30 |
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244Cm |
150 |
α.s-1 |
≤ 1.5% |
0.3 kBq |
CM244 EAS [Type] 20 |
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1500 |
α.s-1 |
≤ 1.5% |
3 kBq |
CM244 EAS [Type] 30 |
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238Pu |
150 |
α.s-1 |
≤ 1.5% |
0.3 kBq |
PU238 EAS [Type] 20 |
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1500 |
α.s-1 |
≤ 1.5% |
3 kBq |
PU238 EAS [Type] 30 |
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239Pu(1) |
150 |
α.s-1 |
≤ 1.5% |
0.3 kBq |
PU239 EAS [Type] 20 |
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1500 |
α.s-1 |
≤ 1.5% |
3 kBq |
PU239 EAS [Type] 30 |
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233U(1) |
150 |
α.s-1 |
≤ 1.5% |
0.3 kBq |
U233 EAS [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 A, B, C or D according to the required geometry. For example: U233 EAS C 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. * Scope N°2-6386 available on www.cofrac.fr or upon request. |
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