Units

ViPErLEED uses units of ångström (Å) for all distances and vibrational amplitudes in inputs and outputs. Some plots may display picometres (1 pm = 0.01 Å), but this will always be clearly labeled.

Energies for input and output are in units of electronvolts (eV). Parts of TensErLEED and certain phase-shift-generation programs use units of hartree internally and in the raw outputs. ViPErLEED takes care of the conversion automatically.