Differential probability of inelastic scattering (dW_EQ.pl files)

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 Q_max 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:

Descriptor	Numerical value
E =	En
Q =	Q1	...	Qn	...	Qmax
dW =	dW (En  , Q1)/dQ	...	dW (En  , Qn)/dQ	...	dW (En  , Qmax)/dQ

Total probability of inelastic scattering (W_E.pl files)

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.

Probability of inelastic scattering with energy loss under Q (R_qE.pl files)

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/Q_max. Here Q and Q_max are, respectively, the current and maximum possible electron energy losses through inelastic interaction for a given incident electron energy and material.

Parameters of the fitting function for the q(R, E) dependence (q_RE.pl files)

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.