Example 2.11. a. Prepare a plot of neutron flux vs. distance from a monoenergetic point source placed in an infinite medium of water. The source strength is 106 neutrons/s. De and Le for water are 0.14 and 7.4 cm, respectively. b. Repeat Parta, replacing the water medium by an infinite nonporous rock medium. De and Le for the rock are 0.47 and 25 cm, respectively. c. Repeat Part b for the same rock, this time with a 20% waterfilled porosity. d. Repeat Part , this time for a porosity value of 40%. e. Comment on the relationship between porosity and neutron flux. f. Plot flux vs. porosity on a semilog grid. Show that the relationship can be approximated by a straight line to porosities up to 40%. Give the equation of this line