The energy levels of the four lowest states of an atom areE, = -14.0 eV,%3DE1 = -9.0 cV,E2 = -7.0 eV,%3DEg = -5.5 eV.E3-E2E1EoFig. 6.11and the transition rates A¡j (Einstein's A cocfficiets) for the i --→ j transi-tions areA10 = 3.0 x 10® s-1,A20 = 1.2 x 10* s-', A30= 4.5 × 107 s-1,A21 = 8.0 x 107-,A31 = 0,A32 = 1.0 x 107 s-1.Imagine a vessel contaiuing a substautial uunber of atoms in the levelE2.(a) Find the ratio of the cucrgy emitted per unit time for the E2 → Eotransition to that for the E2 → Eį transition.(b) Calculate the radiative lifetine of the E level.

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The energy levels of the four lowest states of an atom are E. -14.0 eV, %3D E1 = -9.0 cV, E2 = -7.0 eV, %3D E3 = -5.5 eV. E3- E2 E1 Eo Fig. 6.11 and the transition rates A;j (Einstein's A cocfficiets) for the i --→ j transi- tions are A10 = 3.0 x 10® s-1, A20 = 1.2 x 10* s-', A30 = 4.5 x 107 s-1, A21 = 8.0 x 10' s-', A31 = (0, A32 = 1.0 x 107 s-1. Imagine a vessel contaiuing a snbstautial number of atoms in the level E2. (a) Find the ratio of the cucrgy emitted per unit time for the E2 + Eo transition to that for the E2 → E1 transition. (b) Calculate the radiative lifetine of the E level.

The energy levels of the four lowest states of an atom are E. -14.0 eV, %3D E1 = -9.0 cV, E2 = -7.0 eV, %3D E3 = -5.5 eV. E3- E2 E1 Eo Fig. 6.11 and the transition rates A;j (Einstein's A cocfficiets) for the i --→ j transi- tions are A10 = 3.0 x 10® s-1, A20 = 1.2 x 10* s-', A30 = 4.5 x 107 s-1, A21 = 8.0 x 10' s-', A31 = (0, A32 = 1.0 x 107 s-1. Imagine a vessel contaiuing a snbstautial number of atoms in the level E2. (a) Find the ratio of the cucrgy emitted per unit time for the E2 + Eo transition to that for the E2 → E1 transition. (b) Calculate the radiative lifetine of the E level.