A lot of industrial NDT X-ray inspection is done using Isotope sources. Both Cobalt 60 and Iridium 192 are often used. While it’s easy to find a Co60 X-ray spectrum, I couldn’t find a simple table of energy vs. intensity for Iridium, so I had to do some digging.
Here’s a plot I created from values collected from several sources, the values can be found after the break:
It’s also easy to calculated the weighted average to get a mean energy of 348 keV.
Here’s a listing of a python numpy array, that holds X-ray energies (in MeV) and corresponding intensities (in %):
np.array([[0.0615, 0.4120],
[0.0630, 0.7039],
[0.0651, 1.1309],
[0.0668, 1.9178],
[0.0711, 0.0827],
[0.0714, 0.1600],
[0.0734, 0.0560],
[0.0754, 0.2292],
[0.0757, 0.4408],
[0.0778, 0.1570],
[0.1104, 0.0042],
[0.1363, 0.0860],
[0.1770, 0.0018],
[0.2013, 0.1624],
[0.2058, 1.1468],
[0.2803, 0.0039],
[0.2833, 0.0913],
[0.2960, 12.3498],
[0.3085, 12.7626],
[0.3165, 35.5660],
[0.3292, 0.0060],
[0.3745, 0.2493],
[0.4165, 0.2877],
[0.4205, 0.0237],
[0.4681, 20.5587],
[0.4846, 1.0942],
[0.4853, 0.0010],
[0.4891, 0.1504],
[0.5886, 1.9423],
[0.5935, 0.0181],
[0.5994, 0.0017],
[0.6044, 3.5261],
[0.6125, 2.2962],
[0.7039, 0.0018],
[0.7658, 0.0006],
[0.8845, 0.1251],
[1.0615, 0.0228],
[1.0899, 0.0005],
[1.3782, 0.0005]])