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

I am writing up an experiment which investigates the half value thickness of a 
80kV and of a 100kV heterogeneous x-ray beam. But does the homogeneous 
coefficient vary with different energies of heterogenous beams? Ie, is the 
homogeneous coefficient of the 80kV beam different to that of the 100kV beam? (I 
know that the half-value thickness is different for the two)

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