Mechanisms and Processes of Secondary

Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix

Mechanisms and Processes of Secondary Electron Generation and SE Imaging

Mean free path (MFP) is an average distance, that an particle (e.g. electrons and ions ) travels within a material between events of a specific type, given by,

Mean free path -------------------------------------- [4475a]
-------------------------------------- [4475b]

where A - Atomic weight (g/mol)

N_A -- Avogadro’s number

ρ -- Density of the material (g/cm³).

σ -- Cross section of scattering (cm²)

N_V - The number of scatterers (atoms) per unit volume

Practical Electron Microscopy and Database

An Online Book, Second Edition by Dr. Yougui Liao (2006)

Mechanisms and Processes of Secondary Electron Generation and SE Imaging