
7.5 Neutron Generators in Extreme Conditions
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All measured spectra were tted with the assumption that they contain
only carbon, oxygen, and iron contributions. Contribution of the other ele-
ments like silicon or calcium could be ignored. e tting procedure was done
by using Equation 7.3 where the sum was done over the channel (ch) number.
“Carbon,” “Oxygen,” and “Iron” are pure elemental spectra previously mea-
sured. Parameters “a,” “b,” and “c” are tting parameters called carbon content,
oxygen content, and iron content, respectively. e method of least squares
states that the best values of “a,” “b,” and “c” are those for which chi-