[Calculation of the contributions of scattering effects to the X-ray fluorescence intensities].
The contribution of scattering effects to the X-ray fluorescence intensity was studied for pure element samples, BaB binary samples and fused disk samples by theoretic calculation and experiment. Three scattering effects were considered in the present study, i. e. coherent scattering effect, incoherent scattering effect, and primary fluorescence that was scattered into the direction of detector. The study shows that the contribution of scattering effects to the intensity of fluorescence is related to the energy of the atomic absorption edge, and the sample's matrix. The higher the energy of the atomic absorption edge, the more the contribution of scattering effects to the intensity of fluorescence. The contribution of scattering effects to the fluorescence intensity is larger for light matrix samples than heavy matrix samples. The results of experiment show that the accuracy of theoretic calculation was evidently improved when the scattering effects were considered in the theoretic calculation for the intensity of fluorescence.
Han
Xiao-yuan
XY
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
Zhuo
Shang-jun
SJ
Shen
Ru-xiang
RX
Wang
Pei-ling
PL