Fig. 6

a Visible-reflected (VIS); b UV-induced visible luminescence (UVL); c, d, visible-induced visible luminescence (VIVL); e, f, visible-induced infrared luminescence (VIL) images taken of Terracotta B
a Visible-reflected (VIS); b UV-induced visible luminescence (UVL); c, d, visible-induced visible luminescence (VIVL); e, f, visible-induced infrared luminescence (VIL) images taken of Terracotta B