Energy:

Select 15 15.20 15.50 15.86 20 30 40 50 60 70 80 88 89 100 125 150 200 250 300

Shielding material:

Select lead glass lead concrete gypsum

thickness:

mm

Attenuation factor:

Attenuation times:

1- For "drywall" use gypsum as material (gypsum thikness in drywall = 12.7 mm)

2- Build-up factors for X-rays between 100 keV and 300 keV were calculated using Trubey's table (lead and concrete only).

3- For X-rays below 100 keV the Trubey's build-up corresponding to 100 keV was used (lead and concrete only).

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