57CoCobalt
⁵⁷CoCo-57Кобальт-57Cobalt-57Cobaltum-57
Radionuclide characteristics
Half-life, days
271.8100 ± 0.0400
Photon energy
Line
Energy
Fe XKα2
6.39084 keV (33.2 ± 0.5 %)
Fe XKα1
6.40384 keV (16.8 ± 0.3 %)
Fe XKβ
7.058–7.108 keV (7.1 ± 0.2 %)
γ1
14.41295 ± 0.00031 keV (9.15 ± 0.17 %)
γ2
122.06065 ± 0.00012 keV (85.51 ± 0.06 %)
γ3
136.47356 ± 0.00029 keV (10.71 ± 0.15 %)
Reference data: Update of x ray and gamma ray decay data standards for detector calibration and other applications (IAEA), volume 1, 2007
Certificates and documentation
- Special form radioactive material approval certificate No. D/0098/S-96 (Rev. 1) DE (PDF)
- Certificate of conformity No. ОИАЭ.RU.192 OC.00328 RU (PDF)
Description
57Co is incorporated in a light ceramic matrix and sealed in a welded stainless steel capsule. GCo7.27 source is also available in titanium capsule.
D × H, mm
d × h, mm
Nominal activity, mCi
Nominal activity, MBq
Code
3 × 3
2.1 × 1.5
1–12
37–444
GCo7.11
3 × 10
2.1 × 1.5
1–12
37–444
GCo7.12
4 × 10
3.1 × 1.5
1–12
37–444
GCo7.13
7 × 10
5.2 × 2.5
1–300
37–11100
GCo7.14
8 × 5
4 × 1.2
1–300
37–11100
GCo7.15
10 × 5
8.5 × 1
1–300
37–11100
GCo7.16
12 × 3
8.5 × 1
1–300
37–11100
GCo7.17
30 × 4.5
8.5 × 1
1–300
37–11100
GCo7.18
10 × 4
4 × 1.2
1–300
37–11100
GCo7.19
3 × 5
2.1 × 1.5
1–12
37–444
GCo7.27
* Tolerance: −10 ÷ +20 %.
Other activities and dimensions are available on request.
ISO classification: C64344 (GCo7.11); C64444 (GCo7.12 ÷ GCo7.19); C66444 (GCo7.27 / Stainless Steel); C65343 (GCo7.27 / Titanium).
Recommended working life: 15 years.