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Mössbauer sources: Tin-119m / Sn-119m

119mSn
Radionuclide characteristics
Half-life, days: 293.1 ± 0.7
Photon energy:

Sn XKα225.044 keV (7.980.24%)
Sn XKα125.271 keV (14.80.4%)
Sn XKβ328.444 keV (1.340.04%)
Sn XKβ128.486 keV (2.580.08%)
Sn XKβ229.111 keV (0.7070.021%)
γ123.8750.010 keV (16.500.20%)
γ265.660.01 keV (0.02000.0003%)

Reference data:
Nuclear Data Sheets 110, 2945 (2009)
119mSn sources are prepared on the basis of CaSnO3 matrix, synthesized from 119mSn radionuclide of high specific activity (> 300 mCi/g). Active part is placed in titanium capsule with brazed beryllium window and sealed with laser welding.

Please, pay attention, types of the capsules have been changed.

Code
Nominal
activity *
Capsule type DxH, mm d, mm
mCi MBq
MSn9.221 2 74 2 14x14 10
MSn9.211 2 74 1 11.2x13 10
MSn9.261 2 74 6 6x13 5
MSn9.222 5 185 2 14x14 10
MSn9.212 5 185 1 11.2x13 10
MSn9.262 5 185 6 6x13 5
MSn9.223 10 370 2 14x14 10
MSn9.233 10 370 3 18x14 15
MSn9.213 10 370 1 11.2x13 10
MSn9.224 15 555 2 14x14 10
MSn9.234 15 555 3 18x14 15
MSn9.214 15 555 1 11.2x13 10
MSn9.235 20 740 3 18x14 15

* Tolerance: ±10%

ISO classification: C54243

Recommended working life: 10 years

FWHM measured with 0.09 mg/cm2 BaSnO3 absorber: less than 0.90 mm/s

Other activities are available on request

 

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