In a He-Ne gas laser an electrical discharge pumps helium atoms to a 20.61 eV excited state. This excited helium level is very close to a 20.66 eV level in neon, so that upon collision of a helium atom and a neon atom, the energy can be transferred from the He to the Ne atom. From this excited state, the neon atom then drops to a lower 18.70 eV state thereby emitting a photon. What is the wavelength of this photon?
In a He-Ne gas laser an electrical discharge pumps helium atoms to a 20.61 eV excited state. This excited helium level is very close to a 20.66 eV level in neon, so that upon collision of a helium atom and a neon atom, the energy can be transferred from the He to the Ne atom. From this excited state, the neon atom then drops to a lower 18.70 eV state thereby emitting a photon. What is the wavelength of this photon?
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Transcribed Image Text:In a He-Ne gas laser an electrical discharge pumps helium
atoms to a 20.61 eV excited state. This excited helium level
is very close to a 20.66 eV level in neon, so that upon
collision of a helium atom and a neon atom, the energy can
be transferred from the He to the Ne atom. From this
excited state, the neon atom then drops to a lower 18.70 eV
state thereby emitting a photon. What is the wavelength of
this photon?
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