1. An isotropic surface source of So neutrons/s · cm2 is located on the surface of a sphere of…

1. An isotropic surface source of So neutrons/s_cm2 is located on the
surface of a sphere of radius R. The sphere consists of a non-absorbing
material. Find a) the flux density at the center of the sphere and b) the net
current of neutrons at the center of the sphere through a mid plane.

2. An isotropic surface source emits So
neutrons/s_cm2
and is distributed on the surface of a hemisphere of radius R. The hemisphere
consists of a non- absorbing material. a) Find the flux density at the center
of the hemisphere. b) Find the net current of neutrons at the center of the
hemisphere through a mid plane.