The lifetime (as expressed by the half dose) of thaumatin crystals as a function of dose rate (Warkentin et al., 2012a). At T = 260 K there is a factor-of-two increase in lifetime as the dose rate is increased to 680 kGy s−1. This indicates that half of global damage is being outrun. At 300 K, the data do not extend to high enough dose rates to reliably establish a half-dose increase. Such an increase has been observed in recent 300 K measurements at dose rates up to 1 MGy s−1 (Owen et al., 2012a).