A particular atom has two energy levels with a transition wavelength of 420 nm. At 297 K there are 2.5 1021 atoms in the lower state. (a) How many atoms are in the upper state? (b) Suppose that 1.8 1021 of the atoms in the lower state are pumped to the upper state. How much energy could this system release in a single laser pulse?
A particular atom has two energy levels with a transition wavelength of 420 nm. At 297 K there are 2.5 1021 atoms in the lower state. (a) How many atoms are in the upper state? (b) Suppose that 1.8 1021 of the atoms in the lower state are pumped to the upper state. How much energy could this system release in a single laser pulse?
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Transcribed Image Text:4. A particular atom has two energy levels with a transition wavelength of 420 nm. At 297 K
there are 2.5 1021 atoms in the lower state.
(a) How many atoms are in the upper state?
(b) Suppose that 1.8 1021 of the atoms in the lower state are pumped to the upper state.
How much energy could this system release in a single laser pulse?
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