1. The azimuth angle ? increases counterclockwise as illustrated in figure 3. 2. The RHEED pattern would be different for each azimuth angle . 3. Viewed from different azimuth angles , the observed backscatter from these waves varies. 4. The azimuth angle would go from 0 to 2?. 5. It can, however, still measure radar backscatter at a fixed azimuth angle . 6. The horizontal axis is the azimuth angle in degrees ( 180?is facing south ). 7. Figure 5 shows a schematic diagram of an electron beam incident on the sample at different azimuth angles . 8. Because of the acoustic beam pattern, identical targets at different azimuth angles will return different echo levels. 9. Users generally index at least 2 RHEED scans at different azimuth angles for reliable characterization of the crystal s surface structure. 10. The incident electron beam is incident on an identical surface structure at a different azimuth angles in a ) and b ).
