supported by the Universiti Sains Malaysia(USM);the Research University Grant allocation(Nos.304/PFIZIK/6316173,1001/PFIZIK/822173,203/PTEKIND/6711525)。
Photon absorption parameters such as mass attenuation coefficients(μ_m),molar extinction coefficients(ε),total molecular(σ_(t,m)),atomic(σ_(t,a))and electronic(σ_(t,el))cross sections,half-value layers(X_(1/2)),t...