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[Hardening correction model of energy spectrum for continuous spectrum X-ray ICT]
Guang-han Peng1, Xue-heng Yang, Zhong Han
1College of Science, Chongqing University, Chongqing 400044, China.
Abstract:
In the case of a polychromatic source in X-ray ICT, the variation of attenuation coefficient with energy leads to low energy radiation being absorbed preferentially. In other words, the higher the energy, the more lower the attenuation coefficient. With the transmission thickness augmenting, it is easier for X-ray to transmit the matter. The phenomenon is energy spectrum hardening. Thus, hardening correction has to be done. In the present paper, not only energy spectrum hardening is analyzed by experiment and theory and the relation is stated between attenuation coefficient and transmission thickness, but also the new theory method and the precise accurate theory model for hardening correction of energy spectrum are proposed.
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