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Science · Advanced Physics
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Ed Document Elements Tables Charts SmartArt Home Layout Review Font Cambria (Body) 12 A A- A AaBbC Normal No spacing Heading 1 Heading 2 Titl Subtitl Despite the apparent weak electric fields of conventional light sources, atoms and molecules can (and fre- quently do in nature) absorb and emit light, making a transition from one energy level to another. For light linearly polarized along the z direction, the transition rate for a system going from state to state is proportional to the square modulus of the dipole matrix element between those two states: (25.1) a) Calculate the dipole matrix element between the 1s and 2s tes of hydrogen. Express your answer in terms of eao, where e is the charge of the electron and ao is the Bohr radius. b) Calculate the dipole matrix element between the 1s and all the 2p states of hydrogen (all the magnetic sub levels). Express your answer in terms of eac c) Give a qualitative explanation of why an atom in the superposition state (25.2) radiates electromagnetic waves. Hint: It may be helpful to revisit your results fom prvblem 6for insight. Sec 1 Pages: 3 of 3 Words 0 of 0 Print Layout View Search in Document Text Box Picture 25% Theme

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