Figure 2.
Half-widths at half-maximum of the Lorentzians of global Hb diffusion in RBCs measured with QENS on (a) IN16 (diamonds), IN10 (squares) (open square, 36.5°C, open diamond, 26.9°C; filled square, 19.1°C; filled diamond, 11.9°C) and (b) IRIS (open circle, 36.9°C; filled circle, 16.9°C). The straight lines are linear fits to the data. In (a) the solid lines are fits to IN16 and the dotted lines are fits to IN10 data. The linear increase of the line-widths with q2 is a clear sign of continuous global Hb diffusion. The diffusion coefficients of Hb were determined from the slope of the linear fits. IN10 and IN16 are sensitive to motions in the time scale of approximately ns, whereas IRIS detects motions in the time scale of approximately 40 ps.