Gamma radiation sources: Cobalt-57 / Co-57

Radionuclide characteristics
Half-life, days: 271.80 ± 0.05
Photon energy:

Fe XKα26.39084 keV (33.2±0.5%)
Fe XKα16.40384 keV (16.8±0.3%)
Fe XKβ7.058-7.108 keV (7.1±0.2%)
γ114.41295±0.00031 keV (9.15±0.17%)
γ2122.06065±0.00012 keV (85.51±0.06%)
γ3136.47356±0.00029 keV (10.71±0.15%)
Disk sources: 57Co is incorporated in ceramic matrix and sealed in a welded stainless steel capsule.
Penpoint marker sources: 57Co is incorporated in ceramic matrix and sealed in beryllium capsule with alluminium alloy holder. The source is supplied with brass cap to transport and storage.
Disk sourcesPenpoint marker sources

Code Nominal
activity *
DxH, mm dxh, mm
mCi MBq
GCo7.11 ** 1-50 37-1850 3x3 2.1x1.5
GCo7.12 1-50 37-1850 3x10 2.1x1.5
GCo7.13 50-70 1850-2590 4x10 3.1x1.5
GCo7.14 50-100 1850-3700 7x10 5x2.5
GCo7.15 1-70 37-2590 8x5 4x1.2
GCo7.16 10-100 370-3700 10x5 8.5x1
GCo7.17 10-100 370-3700 12x3 8.5x1

* Tolerance: ±10%

** ISO classification: С64344

ISO classification: С64444

Recommended working life: 15 years

Other dimensions and activities are available on request


Main / Products / Gamma radiation sources
Ritverc will take part in the meeting of the ICRM-LSC work group. The purpose of this meeting is to discuss issues of liquid scintillation spectrometry...

We would be pleased to meet you during 4th Mediterranean Conference on the Applications of the Mössbauer Effect...

Ritverc will take part in the international workshop on plastic scintillation in practice...

We are 25 years old! Historical event has occurred on May, 5th, 1993 when the chairman of committee on external relations of the mayoralty of St. Petersburg, V. V. Putin has signed the Certificate...

© 2003-2018 RITVERC GmbH
phones: (+7 812) 297 44 63
(+7 812) 297 22 69
Call me back
fax: (+7 812) 297 58 87
e-mail: info@ritverc.com