The vertical dashed line indicates the critical point, furthermore, the damaged and fragmented regimes are also shown. ](figures/new_maxmass.eps){width="50.00000%"}

Recently, it has been shown that the final outcome of a fragmentation process can be classified into two states depending on the amount of the imparted energy: damaged and fragmented states with a sharp transition in between. Detailed analysis revealed that the transition between the two states occurs as a continuous phase transition which also provides a possible explanation of the power law mass distribution of fragments observed.

To explore the nature of the critical velocity $v_c$ identified in the previous section we investigated the evolution of the mass of the two largest fragments when varying the angle $\theta$ and the velocity $v_0$ of impact. Plotting the largest fragment mass as a function of the normal component of the impact velocity for both normal and oblique impacts in Fig. \[maxmas\], all curves fall over one another. This implies that in the absence of friction between the plate and the disc, the size reduction achieved depends both on $v_0$ and $\theta$ but in such a way that it depends on the combination of the two variables $v_n = v_0 \sin{\theta}$. The curves of 