The files containing the Laplace spectra have, in general, the same name as the result file containing the measured transient. Different file name extensions indicate which numerical program has been used to calculate this particular spectrum. The result file name is saved in the [general] section. entry: Data File. The numerical method used is specified in the same section, entry: Method. In the [Parameters] section there is the entry AutoRegularization (=on/off) which says whether the numerical method found the value of the regularisation parameter basing upon its own criteria (AutoRegularization=on) or it has been specified by the user (AutoRegularization=off). The following entry (Regularizer) gives the value of this parameter for any of the above cases. The entry Peaks gives the number of peaks found on the spectrum.
NOTE: The Regularizer (auto regularization parameter) is defined differently by all numerical methods used. Thus it makes sense to compare its values but only for the spectra calculated by the same method.
The spectrum itself follows the section header: [Spectrum]. It is organised in four columns: (i) frequency (in Hz), (ii) value, (iii) error of the value, and (iv) the frequency multiplied by the value and a normalisation factor. The spectrum obtained by the Laplace DLTS system can displayed in two modes: standard or Y*X (see the preceding section How the spectrum file on logarithmic scale is plotted for details). In the first case the second column of values is taken, in the later case the fourth column of data represent the values of the spectrum.
The [Peaks] section gives details of the peak parameters obtained from the numerical method. Each line contains the parameters for one peak. There are five columns in this section: (i) emission rate for a centre of gravity of the peak (in Hz), (ii) peak amplitude (in pF), (iii) broadening of the peak (in Hz), (iv) error of the calculated amplitude, and (v) emission rate). The section [summary] gives the values of the average emission rate for the whole spectrum and the total amplitude.
The last section [Baseline] in this file gives a value of the calculated asymptotic capacitance for the transient.