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Standard and testing sources: Dose calibrator gamma standard sources
Application: Dose calibrator gamma standard sources are used as working standards for periodic calibration checks on radionuclide calibrators.
Construction: Active material is homogeneously incorporated in 10 ml epoxy resin, color coded by nuclide and is covered with 10 ml inactive epoxy resin. The source is supplied in a 25 ml plastic vial with screw cap.
| Nuclide | Half-life** | Еγ, keV
and abundances,% ** | Nominal activity * | Colour code
|
|---|
| mCi | MBq |
| Cobalt-57 | 271.8 d | 14.4 (9.2%)
122.1 (85.6%)
136.5 (10.7%) |
0,001-10
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0,037-370
| blue |
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| Cobalt-60 | 5.271 y | 1173.2 (99.9%)
1332.5 (100%) | 0,001-0,1 | 0,037-3,7 | light green |
| Barium-133 | 10.54 y | 81.0 (32.9%)
276.4 (7.2%)
302.9 (18.3%)
356.0 (62.0%)
383.85 (8.9%) |
0,001-1
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0,037-37
| brown |
| Cesium-137 | 30.018 y | 661.7 (85.1%) |
0,001-1
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0,037-37
| yellow |
ISO classification: C23222
* Tolerance: ±15%
** Reference data: T.V.Golashvili, V.P.Chechev, A.A.Lbov, V.M.Kupriyanov, A.P.Demidov "Nuclide Guide-2", Edited by V.N.Mikhajlov, 2-nd edition, revised, Moscow, ATOMINFORM, 2002.
Overall geometric dimensions,
DxH, mm |
Active part,
dxh, mm |
| 27x61 | 25x20 |
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| Main / Products / Standard and testing sources |
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News 
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08.23.2010
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RITVERC GmbH has succesfully passed recertification audit of ISO-9001 based Quality Management System
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12.23.2008
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GAm1.14, GBa3.14 and GCo7.14 sources are given a new strength class C66544 (in accordance with ISO classification).
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11.10.2008
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An insert is developed to fix Mössbauer sources in the container.
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05.07.2008
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These sources are used as working standard for calibration of detectors in spectrometers of high-pure germanium.
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