He beam scattering

In Figs. 4S and 46 we summarize the results obtained by these authors for the Ni(l IS) and Ni(l 13) surface. Figure 45 shows the peak width (FWHM) of the specular He beam scattered from the Ni(115) surface along the (5, S, 2) azimuth as a function of the incident angle 0,. The oscillation characterizes the step density. The lineshapes of the specular He peak are shown in Fig. 46 in a log-log plot for Ni(113) along the (3, 3,2) direction with the temperature as parameter. The profiles suggest the expected power-law behavior and the variation of the power exponent 7 (i.e. the slope) with temperature is obvious. 

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