Linewidths uncertainty

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A neon lamp is placed inside a spectral tube holder and the emission spectrum is observed with a fiber optic spectrometer. The spectrum is loaded into a data analysis software. Some peaks are chosen, notably the 633 nm transition seen in HeNe lasers. The linewidths are determined and the lifetime of the excited states are estimated. This is a nice straightforward demonstration of the energy-time uncertainty relationship, generally difficult to understand.

The neon tube producing its characteristic orange-red glow.
The neon tube producing its characteristic orange-red glow.
Analyzing linewidths in neon's emission spectrum.
Analyzing linewidths in neon's emission spectrum.
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