Determine the probability that a 2 MeV neutron will undergo its first collision in 0.476 cm diameter UO2 fuel rod enriched to 4% in 235U. Assume that the neutron is born in the center of the fuel rod...

Determine the probability that a 2 MeV neutron will undergo its first collision in 0.476 cm diameter UO2 fuel rod enriched to 4% in 235U. Assume that the neutron is born in the center of the fuel rod and that it travels radially toward the fuel boundary. The fuel density is 94% theoretical density (10.96 g/cm3 ).