Objectives for September 6, 2005.
[1] Understand the photoelectric effect, and be able to explain what it implies about light.
[2] Understand the phenomenon of Compton scattering, and be able to explain what it suggests about the nature of light.
[3] Know what Bremsstrahlung is.
[4] Understand the kinematics and dynamics of pair production and annihilation, and be able to explain how these phenomena are used in PET scans.
[5] 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.
[6] Understand J. J. Thomson's “plum pudding” model of the atom, and be able to explain how it failed experimentally.
[7] Know the results of Rutherford's scattering of alpha particles off of gold foils, and understand what they imply about atomic structure.
[8] Know what is meant by Rutherford scattering, and understand how Rutherford derived his results.
[9] Understand the concepts of “impact parameter”, “scattering angle”, “cross section”, and “differential cross section” as applied to scattering.
[10] 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 9, 2005.
[1] Finish reading Chapter 3 in Thornton & Rex.
[2] Do Problems 18, 22, 27, 40, & 47 at the end of Chapter 3 (pp. 116-117) in Thornton and Rex.