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X-ray radiation sources: Barium-133 / Ba-133

133Ba
Radionuclide characteristics
Half-life, days: 3848.7 ± 1.2
Photon energy:

Cs XKα230.625 keV (34.0±0.4%)
Cs XKα130.973 keV (62.8±0.7%)
Cs XKβ234.92-35.26 keV (18.2±0.2%)
Cs XKβ135.82-35.97 keV (4.6±0.1%)
γ153.1622±0.0006 keV (2.14±0.03%)
γ279.6142±0.0012 keV (2.65±0.05%)
γ380.9979±0.0011 keV (32.9±0.3%)
γ4276.3989±0.0012 keV (7.16±0.05%)
γ5302.8508±0.0005 keV (18.34±0.13%)
γ6356.0129±0.0007 keV (62.05±0.19%)
γ7383.8485±0.0012 keV (8.94±0.06%)

Reference data:
Update of x ray and gamma ray decay data standards for detector calibration and other applications (IAEA), volume 1, 2007
133Ba is incorporated in a ceramic matrix, placed in the stainless steel inner and sealed in a welded stainless steel capsule with brazed beryllium window.


CodeNominal
activity *		Typical photon output for Cs KX *, (ph/sec)
10-4 steradian		 DxH, mm dxh, mm
mCi MBq
XBa3.06 1 37 0.3x103 8x5 4x1.2
3 111 0.9x103
5 185 1.5x103
10 370 3.0x103
20 740 5.5x103
30 1110 8.0x103

* Tolerance: ±10%

ISO classification: С65344

Recommended working life: 15 years

Other dimensions and activities are available on request

 

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