X-Ray Attenuation Length

To request a press this button:

To reset to default values, press this button: .

Explanation of Tables

Attenuation Length
The depth into the material measured along the surface normal where the intensity of x-rays falls to 1/e of its value at the surface.
The chemical formula is required here. Note that this is case sensitive (e.g. CO for Carbon Monoxide vs Co for Cobalt).
If a negative value is entered, the chemical formula is checked against a list of some common materials. If no match is found then the density of the first element in the formula is used.
Grazing Angle
In keeping with the standard notation for the x-ray region the incidence angle is measured relative to the surface (NOT the surface normal).
A GIF plot may be generated for quick viewing of the results. If you need anything fancier, the results are provided as a text file for use with your favorite plotting package. An encapsulated postscript file is also offered for printing out the results.