1.0 10 6 atoms are excited to an upper energy level at t = 0 s....
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1.0 × 106 atoms are excited to an upper energy level at t = 0 s. At the end of 20 ns, 90% of these atoms have undergone a quantum jump to the ground state.
a. How many photons have been emitted?
b. What is the lifetime of the excited state?
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Related Book For
Physics For Scientists And Engineers A Strategic Approach With Modern Physics
ISBN: 9780321740908
3rd Edition
Authors: Randall D. Knight
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