A Practical Guide to Scanning and Transmission Electron Microscopy Simulations

Appendix

Unit conventions

abTEM and ASE uses the same unit conventions, as defined in the ase.units module. Thus, electron volts (eV), Ångström (Å), and atomic mass units are defined as 1.0. For convenience, user-defined input angles are in mrad.

Numerical values of constants

The values of commonly used constants in SI units are

constantvalueunits
hh6.6260710346.62607 \cdot 10^{-34}m2kg/s
cc2.997924581082.99792458 \cdot 10^{8}m/s
ee1.60217710191.602177 \cdot 10^{-19}C (A\,s)
mm9.10938310319.109383 \cdot 10^{-31}kg