Question Five: (7 points) a) Write down the energy of the clastic mode of angular frequency w: ..Fn =..e. (..MSAL. A.Y.s

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Question Five 7 Points A Write Down The Energy Of The Clastic Mode Of Angular Frequency W Fn E Msal A Y S 1 (161.87 KiB) Viewed 196 times

Please solve this question completely and in a (correct) way as soon as possible and in its entirety. An accurate solution, without explanation. I just want the mathematical solution (solid state physics) to give you a very good evaluation.
Question Five: (7 points) a) Write down the energy of the clastic mode of angular frequency w: ..Fn =..e. (..MSAL. A.Y.s.).... b) Write down the zero point energy of the above clastic mode: F.x.=.e(..MS.AMS..)..... c) Draw the wave shape of a linear ionic lattice when it vibrates in both acoustionnd and optical modes: Acoustical.. m d² us.. ..... ..F.xh.... F.X... .d.²7... ...... e (us+! - .us) - e(us _us-1) e. (..4.5 +1..F.U.S.Il.F.2.M.S.)....((). Optical.. d) Write down the selection rule for the Phonon-phonon interaction: .... S... ARX P..i..( Beaut.)... dus. Ae.xe. SeR-.w.t.). (.-. .1. w.).. dt &us ar i² w² A exp i (Sea - wt w² A expilsea_w) - Write down the selection rules for the x-ray diffraction (Elastic scattering): the equation of matter of the abom S. i. S......... m_d²us 24 File Formy. Made (us 45-1 Setust Ee (ust) + u.s-1-205.). f) Write down the selection rule for the neutron scattering: ......