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Standard and testing sources: Point gamma standard spectrometry sources set / "OSGI-R" - set
Application: Gamma standard sources ("OSGI-R"-set) are used as working standards for verification and graduation of photon measuring equipment,  for certification of measuring methods and measurement accuracy control of photon emission. "In particular, the set is intended for testing and calibration of precision instruments, spectrometers and radiometers, ionization chambers and scintillation counters. "OSGI-R"-set is especially designed for use in testing and calibration of spectrometers used in environmental analysis.
Description: The source is produced in the form of a flat round capsule made of aluminum, 25 mm in diameter and 3 mm thick. The source active part of less than 3 mm in diameter is embedded between two polyimide foils with total thickness of 100 ± 10 µm.
| Nuclide* | Half-life** | Åγ, keV
and abundances,% ** | Nominal activity * | Dose rate at 0.1 meter,
µSv/h |
|---|
| µCi | kBq |
| Sodium-22 | 2.6027 y | 1274.54 (99.94%) | 0.027 ÷ 27 | 1 ÷ 1000 | ≤35.0 |
| Titanium-44 | 60.0 y | 68.9 (94.4%)
78.3 (96.2%)
1157.0 (99,9%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤3.4 |
| Manganese-54 | 312.11 d | 834.8 (100%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤1.4 |
| Iron-55 | 2.741 y | 5.9 (25%)
6.5 (3.4%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤0.002 |
| Cobalt-57 | 271.8 d | 14.4 (9.2%)
122.1 (85.6%)
136.5 (10.7%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤0.17 |
| Cobalt-60 | 5.271 y | 1173.2 (99.9%)
1332.5 (100%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤3.8 |
| Zinc-65 | 244.06 d | 1115.54 (50.6%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤1.0 |
| Yttrium-88 | 106.626 d | 898.0 (94.1%)
1836.1 (99.4%) | 0.027 ÷ 27 | 1 ÷ 1000 | ≤38.8 |
| Cadmium-109 | 461.4 d | 88.0 (3.61%) | 0.027 ÷ 27 | 1 ÷ 1000 | ≤0.04 |
| Tin-113 | 115.09 d | 255.1 (2.1%)
391.7 (64.9%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤0.44 |
| 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%) | 0.027 ÷ 27 | 1 ÷ 1000 | ≤8.8 |
| Cesium-134 | 2.0648 y | 563.2 (8.4%)
569.3 (15.4%)
604.7 (97.6%)
795.8 (85.5%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤2.5 |
| Cesium-137 | 30.018 y | 661.7 (85.1%) | 0.027 ÷ 27 | 1 ÷ 1000 | ≤10.0 |
| Cerium-139 | 137.641 d | 165.9 (79.9%) | 0.027 ÷ 27 | 1 ÷ 1000 | ≤6.3 |
| Europium-152 | 13.516 y | 121.78 ÷ 1408.0 | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤2.0 |
| Gadolinium-153 | 240.4 d | 97.4 (29.0%)
103.2 (21.1%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤0.2 |
| Bismuth-207 | 32.9 y | 569.7 (97.8%)
1063.6 (74.6%) | 0.027 ÷ 13.5 | 1 ÷ 50 | ≤1.3 |
| Thorium-228 + daughters | 1.9116 y | 84.4 ÷ 2614.5 | 0.027 ÷ 13.5 | 1 ÷ 50 | ≤0.15 |
| Americium-241 | 432.6 y | 26.3 (2.4%)
59.5 (35.8%) | 0.027 ÷ 2.7 | 1 ÷ 100 | ≤0.04 |
| Americium-243 | 7370 y | 43.5 (5.9%)
74.7 (68.2%) | 0.027 ÷ 13.5 | 1 ÷ 50 | ≤0.04 |
* Other radionuclides and activities are available on request.
** 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.
Recommended working life and intercalibration interval
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Nuclide
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Recommended working life
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Intercalibration interval
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Th-228, Am-241, Am-243
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5 years (activity < 10 êBq)
3 years (activity > 10 êÁq)
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2 years
1 year
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| Mn-54, Co-57, Zn-65, Y-88Cd-109, Sn-113, Ce-139, Gd-153 |
4 years
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1 year
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| Na-22, Fe-55, Cs-134 |
10 years
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2 years
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Ti-44, Co-60, Cs-137, Ba-133,Eu-152, Bi-207
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12 years
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2 years
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| Holder type |
Overall geometric dimensions |
Active part,
d, mm, not more than |
Active area,
mm2, not more than |
| D, mm |
H, mm |
| holder a |
25 |
3 |
3 |
7.07 |
| holder b |
29 |
3 |
Expanded uncertainty:  3% (k=2)
Packaging:
Sources are packed into cases:
- for 1 source;
- for 3 ÷ 11 sources.
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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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