Question

In order to determine the macroscopic and microscopic cross section for a certain you set up a collimated neutron source on one side and a neutron detector fter single isotope material, on the other. The intensity of the neutron beam is initially 10% neutrons per cm2 per second. A passing through the 3 cm. thick sample, the bean se er of the material is 3.8 grams per cubic centimeter and the molar mass is 8 cond. If the density grams per mole, calculate the macroscopic and microscopic total cross section