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\section{Neon} \section{Experiments with a Neon Tube}  A commercial apparatus containing Neon atoms was used. The tube contained a cathode, two mesh-type control grids ($G_{1}$ and $G_{2}$) , and a collector electrode. The distance between grid 1 and grid 2 was about 5mm. The distance between the cathode and grid 1 and the distance between the collector electrode and grid 2 was approximately 2 mm. The cathode was kept at a constant current ($135 mA$), and grid 1 and grid 2 were kept at constant voltages. ($4.8V$ and $11.6V$ respectively.) The anode current, (converted into $V_{out}$), oscillates as accelerating voltage $U_{2}$ increases. The final Franck-Hertz curve for Neon shown in Figure 3 contained 3 dips of the anode current. Close observation of the peaks and dips indicates a systematic substructure, but poor data quality meant that it could not be analyzed quantitatively. At the very end of the graph (about $V_{acc}<80V$), the data looks linear. This is consistent with the expected behavior of Neon after it ionizes.