Figure 18
A plot of TOF data taken with a 3He detector corrected for background with L2 = 1.6 m and λ0 = 8 Å for air (black), quartz (blue), glassy carbon (dark green), methacrylate (red), a silicon (220) single crystal (lime green) and a vanadium single crystal (orange). The elastic scattering peak occurs at t = 0.0032 s. Note that the mean sample-to-detector distance for air was slightly shorter at L2 = 1.5 m. The data are binned into 1000 time channels on the horizontal axis. The vertical axis shows the number of counts per second per bin, rescaled by values indicated in the legend. The count rates were not corrected for the wavelength dependence of the 3He detector efficiency. |