Homework #3 Assignment
Problem 4: (20 points)
An infinite planar source emitting
S neutrons
/cm^(2)-sec is placed between infinite slabs of beryllium and graphite of thickness
a and
b, respectively, as shown in the figure below. Derive an expression for the neutron flux in the system.
Hint: Since the media are different on opposite sides of the source, the problem is not symmetric, and the source condition
\lim_(x->0)J(x)=(S)/(2) is not valid.
The appropriate boundary conditions for this problem are: