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William edited figures/Argon/caption.tex
over 8 years ago
Commit id: 8473ab62d97b2635803ad6f64514a5a5a2eced97
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\textbf{Figure 10}
\end{centering}
This shows the \par Spacings $\Delta
E_n$ values versus their $n$ E$ between the minima and maximum in the Franck-Hertz curve measured with an Argon tube plotted against minimum order $n$. Although both the minima and maxima are plotted, the minimum values
for Argon. are really the important data points, since they correspond to the excitation energy of the atoms. Experimental results indicate a dependence on the mean free path, since the spacings between the minima appear to increase linearly. Thus the long mean free path limit (Equation 5) is likely to give the best approximation of the energy of the lowest excitation level.
