| Physics IV [Phys 262] Objectives and Homework for September 14, 2004. [1] Understand the photoelectric effect, and be able to explain what it implies about light. [2] Know what Bremsstrahlung is. [3] Understand the kinematics and dynamics of pair production and annihilation, and be able to explain how these phenomena are used in PET scans. [4] Know what an antiparticle is, and realize that all particles observed thus far have associated antiparticles. Realize that a particle may be its own antiparticle, but recognize that this puts serious constraints on its quantum numbers. [5] Understand J. J. Thomson's "plum pudding" model of the atom, and be able to explain how it failed experimentally. [6] Know the results of Rutherford's scattering of alpha particles off of gold foils, and understand what they imply about atomic structure. [7] Know what is meant by Rutherford scattering, and understand how Rutherford derived his results. [8] Understand the concepts of "impact parameter", "scattering angle", "cross section", and "differential cross section" as applied to scattering. [9] Be able to apply Rutherford's scattering equation. Realize that the total cross section for Rutherford scattering is infinite, and be able to explain why. Homework due Friday, September 17, 2004. [1] Finish Reading Chapter 3 in Thornton and Rex. [2] Do Problems 27, 32, 36, 38, 40, & 47 (pp. 116-117) at the end of Chapter 3 in Thornton and Rex. |
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