TY - JOUR AU - Shigeo Tanuma AU - Cedric Powell AU - David Penn C2 - Surface and Interface Analysis DA - 1993-01-01 00:01:00 LA - en M1 - 20 PB - Surface and Interface Analysis PY - 1993 TI - Calculations of Electron Inelastic Mean Free Paths (IMFPs) IV. Evaluation of Calculated IMFPs and of the Predictive IMFP Formula Tpp-2 for Electron Energies between 50 and 2000 eV ER -