The wavelength of a resonant mercury line is 253 65 nm The mean lifetime of mercury atoms in the state of resonance excitation is z 0 15s Evaluate the ratio of the Doppler line broadening to the natural line width at a gas temperature T 300K ...

A short lived state of mean life T has an uncertainty in energy of A E to the photon it emits as ...

The wavelength of a resonant mercury line is = 253.65 nm. The mean lifetime of mercury atoms

Question:

The wavelength of a resonant mercury line is λ = 253.65 nm. The mean lifetime of mercury atoms in the state of resonance excitation is z = 0.15μs. Evaluate the ratio of the Doppler line broadening to the natural line width at a gas temperature T =300K.