Cobalt-57 active part is prepared by electrodeposition of high purity carrier-free 57Co onto a thin (thickess 6 μm or less, diameter: 4 - 8 mm) metal matrix followed with controlled annealing process. Standard matrices are rhodium and chromium. Other matrices are available on request.
Active part is placed into titanium alloy holder with brazed beryllium window. Laser welding of titanium alloy holder ensures environmental safety against radiation contamination.
* Tolerance: ±10%
ISO classification: C54243
Recommended working life: 5 years
FWHM measured with 27.3 µm α-Fe foil: 0.230 ÷ 0.255 mm/s
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Code
Nominal activity *
Holder type
Overall geometric dimensions DxH, mm
Active part d**, mm
mCi
MBq
MCo7.171
5
185
7
4x14
1
MCo7.172
10
370
* Tolerance: ±10%
ISO classification: C54143
Recommended working life: 5 years
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The design of some transducers enables one to fix a source inside a hollow rod. A design like that makes it possible to have two resonance channels operating simultaneously with one source. The second channel may be used for calibration or for second sample measurements. For this purpose the sealed double sided sources are designed.
Code
Nominal activity *
Holder type
Overall geometric dimensions DxH, mm
Active part d**, mm
mCi
MBq
MCo7.181
5
185
8
12x6
10
MCo7.182
10
370
MCo7.183
25
925
MCo7.184
50
1850
MCo7.185
100
3700
* Tolerance: ±10%
**Other value is available on request
ISO classification: C54243
Recommended working life: 5 years
FWHM measured with 27.3 µm α-Fe foil: 0.230 ÷ 0.255 mm/s
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