Fig. 3: The dependence of the specular scattering flux on the geometry, beam velocity and surface temperature.
From: Rotational orientation control of a ground state ortho-H2 dissociation on a metal surface
a Comparing FD scattering measurements from a 500 K surface, using a 106 K nozzle. Magenta and blue markers and are for two different scattering geometries \({{{\rm{\theta }}}}_{{{\rm{total}}}}={45}{^\circ } \, {\mbox{and}} \, 22.5^\circ\). The alignment scattering model fits are shown as lines with corresponding colours. The error bars show the standard deviation of the measured values calculated from repeat measurements (n = 61 and n = 200 respectively) (b) Comparing FD scattering measurements from a 500 K surface for \({{{\rm{\theta }}}}_{{{\rm{total}}}}={45}{^\circ },\) using a 106 K nozzle (magenta), an 84 K nozzle (black) and a 149 K nozzle (green). The fits to the alignment model are shown as lines with corresponding colours. The error bars show the standard deviation of the measured values calculated from repeat measurements (n = 61, 50 and 250, respectively). c Comparing FD scattering measurements using a 106 K nozzle and \({{{\rm{\theta }}}}_{{{\rm{total}}}}={45}{^\circ }\) for a 500 K surface (magenta) which is clean and reactive to FD measured from a 180 K surface covered with a passivating layer (blue). The alignment scattering model fits are shown as lines with corresponding colours. The error bars show the standard deviation of the measured values calculated from repeat measurements (n = 61 and n = 250, respectively). Source data are provided as a Source Data file.
