Grading Key for HWA #6

6-1 = 6 points
(a) 2 points for the derivation
(b) 2 points for Im(1/epsilon)
+ 2 points from the integral

6-2 = 6 points
2 points for deriving the formula for R(W0)
+ 2 points for calculating R(10keV) and R(100keV)
   (comparison values are given in the problem))
+ 2 points for the graph

6-3 = 5 points
2 points for the k integral
+2 points for the omega integral
+1 point for the final result

6-4 = 4 points
(a) 2 points for proving the PDE
(b) 2 points for proving the BCs

6-5 = 5 points
(a) 3 points for the graphs
(b) 2 points for the radiation zeroes

6-6 = 6 points
(a) 2 points for the formula
(b) 2 points for dR/dL in gaussian units
+ 2 points for dR/dL in SI units.