The work presented in this paper was performed at the Oriental Institute at the University of Chicago, on objects from their permanent collection： an ancient Egyptian bird mummy and three ancient Sumerian corroded co...The work presented in this paper was performed at the Oriental Institute at the University of Chicago, on objects from their permanent collection： an ancient Egyptian bird mummy and three ancient Sumerian corroded copper-alloy objects. We used a portable, fibercoupled terahertz （THz） time-domain spectroscopic ima- ging system, which allowed us to measure specimens in both transmission and reflection geometry, and present time- and frequency-based image modes. The results confirm earlier evidence that THz imaging can provide complementary information to that obtainable from X-ray computed tomography （XRCT） scans of mummies, giving better visualisation of low density regions. In addition, we demonstrated that THz imaging can distinguish mineralized layers in metal artifacts.展开更多
文摘The work presented in this paper was performed at the Oriental Institute at the University of Chicago, on objects from their permanent collection： an ancient Egyptian bird mummy and three ancient Sumerian corroded copper-alloy objects. We used a portable, fibercoupled terahertz （THz） time-domain spectroscopic ima- ging system, which allowed us to measure specimens in both transmission and reflection geometry, and present time- and frequency-based image modes. The results confirm earlier evidence that THz imaging can provide complementary information to that obtainable from X-ray computed tomography （XRCT） scans of mummies, giving better visualisation of low density regions. In addition, we demonstrated that THz imaging can distinguish mineralized layers in metal artifacts.
