Re: Does the homogeneity coefficient vary with the energy of a x-ray beam (kVp)

Dear User,

You have to clarify the question a bit. For one - what method do you use 
to generate your X-rays ? I am going to assume electron excitation of metal 
but that's just a guess. 

In the case of 'cathode ray tube' experiments the spectrum of the radiation 
is in no way simple - it is composed of the 'white beam' component and the 
metal band(s). Voltage would change the intensity of both, but in a 
nonlinear manner. Thus, in a simple-minded approximation, you can't use the 
same 'homogenous coefficient' (are you talking about the mu coefficient in 
the Beer law formula ?) for both cases.

Another level of complication arises from the material that you use to absorb 
x-rays. Is it a metal or an alloy or plastic of some sort ? Depending on 
the wavelength-specific absorption, the coefficient would be different for 
different wavelengths and may not average out for the whole spectrum.

Please write back to MadSci with a clarification/details of the experiment
and we might be able to help you better.

A.G.E.