Reading for 4/21
Transitions and Radiation, Selection Rules
Lecture Section 7.7
Note: We haven't covered the operator algebra solution to the
1D harmonic oscillator, so the examples given in Sections 7.7.2 and
7.7.4 will be hard to follow. We'll consider the infinite square
well instead.
Reading Questions
 Eq. 7.141 indicates that we only need to know the value of the
frequency distribution of the electromagnetic field at the
transition frequency  the rest of the energy spectrum
doesn't matter. Why not? (Are you convinced?)
 What integral do you need to do to determine whether the first
excited state of the infinite square well can make an E1 transition
to the ground state? Use a symmetry argument (about the center of
the well) to determine whether the integral is zero or not (no
actual integration allowed).
Respond
Copyright © 20082009, Lewis A. Riley

Updated Mon Jan 26 23:40:56 2009
