Point β sources
Radionuclides are deposited between two hot-sealed polyester foils (approximately 75μm thick each). Each face of the source is gold vacuum-coated for optimum measurement efficiency. They are then mounted in a steel ring.
Radiological characteristics of the sources are measured with a calibrated gas flow proportional counter.
Catalog references | On request |
Active diameter | |
3 mm 0.12 in | From 3 to 30 mm From 0.12 to 1.2 in |
30 mm 1.2 in | |
External diameter | |
25 mm 1 in | From 25 to 60 mm From 1 to 2.4 in |
38 mm 1.5 in | |
50 mm 2 in | |
Activity | |
0.08 kBq 0.002 µCi | From 0.05 to 30 kBq From 0.001 to 8.1 µCi |
3 kBq 0.08 µCi | |
Radionuclide | |
22Na, 36Cl, 60Co, 90Sr/90Y, 137Cs/137mBa, 147Pm, 204Tl, 89Sr, 134Cs | 32P, 35S, 45Ca, 63Ni, 99Tc, 129I |
Radionuclide | 4π sr beta flux | k=2 measurement uncertainty | Equivalent activity | Reference | ||
Under COFRAC* accreditation | ||||||
36Cl | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | CL36 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | CL36 EBS [Type] 30 | ||
60Co | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | CO60 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | CO60 EBS [Type] 30 | ||
134Cs | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | CS134 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | CS134 EBS [Type] 30 | ||
137Cs | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | CS137 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | CS137 EBS [Type] 30 | ||
22Na | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | NA22 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | NA22 EBS [Type] 30 | ||
147Pm | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | PM147 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | PM147 EBS [Type] 30 | ||
89Sr | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | SR89 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | SR89 EBS [Type] 30 | ||
90Sr + 90Y | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | SR90 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | SR90 EBS [Type] 30 | ||
204Tl | 80 | β.s-1 | ≤ 1.5% | 0.08 kBq • 0.002 µCi | TL204 EBS [Type] 20 | |
3 000 | β.s-1 | ≤ 1.5% | 3 kBq • 0.08 µCi | TL204 EBS [Type] 30 | ||
Standard manufacturing tolerance: ± 30% IAEA Category : 5 • ISO2919 Classification: C11111 | How to compose the reference ? Replace [Type] with the letter A, B or C according to the required geometry. For example: TL204 EBS A 30. | |||||
* Scope N°2-6386 available on www.cofrac.fr or upon request. | ||||||
EBS A and EBS B sources are also available in kit form. Radionuclides supplied are 147Pm, 134Cs, 137Cs, 90Sr+90Y, 204Tl and 22Na with an activity of 0.002 μCi (80 Bq) or 0.08 μCi (3 000 Bq). Other activities of EBS sources are available on request.
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