The files titled dW_EQ.pl contain the dependences of inverse differential inelastic mean free path of fast electrons, dW(E, Q)/dQ (in cm-1 eV-1), in a solid with given composition on the initial electron energy E (in eV) and the energy loss Q (in eV). The energy E varies from 5 to 30000 eV, the energy loss Q -- from 0.01 eV to Qmax which is the maximum possible energy loss for given E and material.
The file is arranged as a set of string groups. Each group has three strings of numerical values separated by semicolons. Each string bigens from a new line with an appropriate descriptor (tag). The group structure looks as follows:
|dW =||dW (En , Q1)/dQ||...||dW (En , Qn)/dQ||...||dW (En , Qmax)/dQ|
The files titled W_E.pl contain the dependences W(E) of the inverse total inelastic mean free path (in cm-1) of fast electrons in a solid with given composition on the incident electron energy E (in eV).
The file is arranged as a two-column table, beginning with appropriate descriptors. A calculated function and its argument are placed in the positions corresponding to white cells of the table below.
The files titled R_qE.pl contain the function R(q, E) -- the dependence of the probability of the inelastic scattering with energy loss under Q on the incident electron energy E (in eV) and the ratio q = Q/Qmax. Here Q and Qmax are, respectively, the current and maximum possible electron energy losses through inelastic interaction for a given incident electron energy and material.
|E>||R(q, E) at q =|
|EN||...||...||...||...||R(1 , EN)|
The files titled q_RE.pl contain parameters for analytical approximation of the q (R, E) dependence which is inverse to R (q, E). This dependence is approximated by a function of the parameters a (E), b (E), g (E), p (E) and m (E), described in General relations page.
The whole range of energies for which the calculations have been performed is divided into several intervals. Within each of them the parameter m which determines the general form of the fitting function F (a, b, g, p, m, R) is constant, but it may vary from one interval to another. The boundaries of intervals depend on the material of the target.
The file is arranged as a seven-column table beginning with appropriate descriptors. The calculated parameters and their arguments are placed in the positions corresponding to white cells of the table below. d is the integral relative error of approximation.
|E1||a (E1 )||b (E1 )||g (E1 )||p (E1 )||m (E1 )||d (E1 )|
|En||a (En )||b (En )||g (En )||p (En )||m (En )||d (En )|
|EN||a (EN )||b (EN )||g (EN )||p (EN )||m (EN )||d (EN )|