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Cumulative histograms for the calculation of the first term for hydride (a) and deuteride (c) systems, normalized to unity integral. Fits of the linear region, from 800 to 1000 time steps (400 to 500 fs), are shown for hydride (b) and deuteride (d) systems. The slopes of these linear fits are the values for the first term of the rate calculation. Note that a time step corresponds to 1/2 fs.
