• Ultra low beam current 0.1 - 30 nA
• Ideal for sensitive sample (organics, insulators…)
• Single or double channelplate
• Viewing angle 70°

The channelplate version of the SPECTALEED reverse view LEED optics is specially designed for operation with ultra low primary beam currents down to the pico ampere range (with a double MCP). Such low beam currents may be unavoidable for applications where the beam current levels experienced in standard LEED applications (typically in the microampere range) may possibly lead to damage of delicate samples or cause rapid charging of insulator surfaces.

Consequently the MCP-LEED allows for structural analysis of inherently sensitive samples, such as organics, insulators or single crystals with weakly bound adsorbates, without complications caused by deterioration due to beam-induced effects.