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X-ray radiation sources: Cadmium-109 / Cd-109

109Cd
Radionuclide characteristics
Half-life, days: 461.4 ± 1.2
Photon energy:

Ag XKα221.9906±0.0002 keV (28.99±0.26%)
Ag XKα122.1632±0.0001 keV (54.7±0.4%)
Ag XKβ224.912-25.146 keV (15.14±0.18%)
Ag XKβ125.457-25.512 keV (2.63±0.10%)
γ88.0336±0.0011 keV (3.626±0.020%)
109Cd is incorporated in a ceramic matrix, placed in the tungsten inner and sealed in a welded stainless steel capsule with brazed beryllium window.


Code Nominal
activity *
Typical photon output for Ag KX *, (ph/sec)
10-4 steradian
DxH, mm dxh, mm
mCi MBq
XCd9.06 5 185 1.2x103 8x5 5x1.2
10 370 2.5x103
15 555 4.0x103
20 740 5.0x103
40 1480 7.5x103
XCd9.07 **
5 185 1.2x103 10.8x5 7x1.0
10 370 2.5x103
15 555 4.0x103
20 740 5.0x103
40 1480 7.5x103
60
2220 11x103
XCd9.08 **
5 185 1.2x103 15x5 10.5x1.0
10 370 2.5x103
15 555 4.0x103
20 740 5.0x103
40 1480 7.5x103
60
2220 11x103
80 2960 13.5x103
100
3700 15x103

* Tolerance: ±10%

ISO classification: 65344

** ISO classification: 65343

Recommended working life: 15 years

Other dimensions and activities are available on request

 

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