57CoCobalt

⁵⁷CoCo-57Кобальт-57Cobalt-57Cobaltum-57

Radionuclide characteristics

Half-life, days

271.8100 ± 0.0400

Photon energy

Line
Energy
Emission probability
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

Mössbauer resonance on ⁵⁷Fe

Application

The sources are suitable to use in all Mössbauer spectrometers and for industrial applications of the Mössbauer effect.

Certificates and documentation

  • NRC Certificate SSDR LA-1491-S-105-S Mossbauer Sources EN (PDF)
  • Certificate of conformity No. ОИАЭ.RU.192 OC.00344 RU (PDF)

Serial sources

Description

Active spot of Mössbauer source is prepared by electrodepositing high purity carrier-free ⁵⁷Co onto a thin metal backing (matrix) followed by controlled annealing process. Standard matrix is rhodium. Active part is placed into titanium alloy holder with brazed beryllium window and sealed with laser welding.

⁵⁷Co Mössbauer source, capsule type 1 and 6
Capsule type 1, 6
⁵⁷Co Mössbauer source, capsule type 2
Capsule type 2
Capsule type
D × H, mm
d, mm
Nominal activity, mCi
Nominal activity, MBq
Line width, mm/s
Code
1
11.2 × 13
8
5
185
0.11–0.13
MCo7.111
1
11.2 × 13
8
10
370
0.11–0.13
MCo7.112
1
11.2 × 13
8
25
925
0.11–0.13
MCo7.113
1
11.2 × 13
8
50
1850
0.11–0.13
MCo7.114
1
11.2 × 13
8
100
3700
0.11–0.14
MCo7.115
2
14 × 14
8
5
185
0.11–0.13
MCo7.121
2
14 × 14
8
10
370
0.11–0.13
MCo7.122
2
14 × 14
8
25
925
0.11–0.13
MCo7.123
2
14 × 14
8
50
1850
0.11–0.13
MCo7.124
2
14 × 14
8
100
3700
0.11–0.14
MCo7.125
6
6 × 13
4
5
185
0.11–0.15
MCo7.161
6
6 × 13
4
10
370
0.11–0.15
MCo7.162

* Tolerance −5 ÷ +10 %.
Recoilless fraction: 0.75.
14.41 keV photon emission efficiency: ≥ 75 %.
ISO classification: C54243.
Temperature range: −60 … +150 °C;
With short-term exposure to temperatures down to −196 °C;
Cyclic temperature changes from room temperature to −269 °C are allowed (no more than 80 cycles)**.
Recommended working life: 10 years.
All sources are carefully tested on certified equipment. Each source is supported by a Test Report with measured values of Mössbauer spectra parameters.
** Additional notification is required for liquid helium temperature application.

Point sources

Description

The source is a beryllium capsule with active part inside, inserted into a titanium alloy holder. The holder is a single-piece element with truncated cone shaped front end and threaded tail piece. Source active part is a metal matrix with thermally diffused ⁵⁷Co isotope. Source tightness is achieved by glued and welded joints.

⁵⁷Co Mössbauer point source, capsule type 9
Capsule type 9
⁵⁷Co Mössbauer point source, capsule type 10
Capsule type 10
Capsule type
D × H, mm
d, mm
Nominal activity, mCi
Nominal activity, MBq
Line width, mm/s
Code
9
4 × 14
1
5
185
0.13–0.15
MCo7.191
9
4 × 14
1
10
370
0.13–0.17
MCo7.192
10
6 × 17
1
5
185
0.13–0.15
MCo7.1101
10
6 × 17
1
10
370
0.13–0.17
MCo7.1102

* Tolerance −5 ÷ +10 %.
Recoilless fraction: 0.75.
14.41 keV photon emission efficiency: ≥ 75 %.
ISO classification: C33243.
Temperature range: −50 … +50 °C;
With short-term exposure to temperatures down to −196 °C.
Recommended working life: 10 years.
All sources are carefully tested on certified equipment. Each source is supported by a Test Report with measured values of Mössbauer spectra parameters.