Figure 1

Temporal evolution of the (upper) CCD image of the Cherenkov radiation in SiO2 and (bottom) 1D projection; from left, 120–125 s, 600–605 s, and 1200–1205 s after irradiation.

Temporal evolution of the (upper) CCD image of the Cherenkov radiation in SiO2 and (bottom) 1D projection; from left, 120–125 s, 600–605 s, and 1200–1205 s after irradiation.