59 o Figure 40-24 shows the energy levels of two types of atoms. Atoms A are in one tube, and atoms B are in another tube. The energies (relative to a ground-state energy of zero) are indicated; the average lifetime of atoms in each level is also indi- cated. All the atoms are initially pumped to levels higher than the levels shown in the figure. The atoms then drop down through the levels, and many become "stuck" on certain levels, leading to popu- lation inversion and lasing. The light emitted by A illuminates B and can cause stimulated emission of B. What is the energy per photon of that stimulated emission of B? 11.5 eV, 3 ms 10.8 ev, 3 ms 9.5 eV, 3 ms 6.9 eV, 3 ms 7.8 eV, 3 us 6.1 ev, 3 us 6.2 eV, 3 us 4.2 eV, 3 ms 5.4 eV, 3 ms 3.9 ev, 3 us 3.7 eV, 3 us B. Figure 40-24 Problem 59. |I||

59 o Figure 40-24 shows the energy levels of two types of atoms. Atoms A are in one tube, and atoms B are in another tube. The energies (relative to a ground-state energy of zero) are indicated; the average lifetime of atoms in each level is also indi- cated. All the atoms are initially pumped to levels higher than the levels shown in the figure. The atoms then drop down through the levels, and many become "stuck" on certain levels, leading to popu- lation inversion and lasing. The light emitted by A illuminates B and can cause stimulated emission of B. What is the energy per photon of that stimulated emission of B? 11.5 eV, 3 ms 10.8 ev, 3 ms 9.5 eV, 3 ms 6.9 eV, 3 ms 7.8 eV, 3 us 6.1 ev, 3 us 6.2 eV, 3 us 4.2 eV, 3 ms 5.4 eV, 3 ms 3.9 ev, 3 us 3.7 eV, 3 us B. Figure 40-24 Problem 59. |I||

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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