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Beta radiation sources: Promethium-147 / Pm-147

147Pm
Radionuclide characteristics 
Half-life, days: 958.176 ± 0.073
Photon energy:

XR Kα2 39.522 keV (0.000612±0.000014%)
XR Kα1 40.118 keV (0.001102±0.000023%)
γ121.220±0.017 keV (0.00285% )

Beta particle energy:

β1 max 103.4±0.4 keV (0.00569±0.00023%)
β127.07±0.11 keV
β2 max 224.6±0.4 keV (99.99%)
β261.93±0.16 keV

Reference data:
1) Update of x ray and gamma ray decay data standards for detector calibration and other applications (IAEA), volume 1, 2007
2) Nuclear Data Sheets 110, 749 (2009)

147Pm incorporated in an enamel, mounted in a glued titanium capsule with 5 µm titanium window, welded.

Quality control
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Code Nominal
activity *		 Overall diameter, mm Active diameter, mm
mCi GBq
PHC80951 100 3.7 22 15.6
PHC80952 200 7.4
PHC80955 500 18.5

* Tolerance: -10% +25%

ISO classification: C33222

Recommended working life: 5 years

 

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