The induced transient absorbance in irradiated fused silica could be crucial in analyzing and interpreting the results of pulse radiolysis for weakly absorbing transient species. In this study, we investigated the absorbance of quartz plates in the UV–Vis range in a timescale of 10 ns instead of 1 ns done in the previous study (Schmidhammer et al. (2012)) and we extended it to the NIR range. Herein, we report on the dynamics of radiolytic species induced in fused silica by 7 ps electron pulse (8 MeV). The results infer that at least two main species are induced in the material when subjected to picosecond electron pulse. One kind of species has strong absorption in the UV while the other species have broad absorbance with a maximum at 580 nm. Unlike in the UV and Vis spectral range, a low absorbance is observed also in the NIR, which decays immediately after the pulse within 11 ps. Our finding confirms and suggests that the prevailing induced absorbance in quartz cells should not be neglected when transient species of other solutions are considered in the sub- 10 ns pulse-probe measurements.