Extended Data Fig. 5: CPDF analysis.
From: Direct observation of ultrafast hydrogen bond strengthening in liquid water

a, A comparison of experimental and simulated CPDF. The overall scaling factor is achieved by matching the height of the first OO between experimental and simulated curves. The simulation is a 275 K water box under equilibrium condition. b, The simulated elastic and inelastic components of the CPDF, the inelastic component is concentrated to r < 2.5 Å. Exp., experimental; Sim., simulated. c, CPDF for five delay windows (see the key) in full r range. d, CPDF for five delay windows (see the key) around the second OO shell. The peak height around 4.6 Å is used to extract g2 for Fig. 4a