Calculate the macroscopic absorption cross section for aluminum given that a thermal flux of 2.91x10⁸ neutrons/cm² sec (E = 0.0253 eV) is incident on a 4.8 mm thick aluminum foil, and that after passing through the foil the beam contained 2.89x10⁸ neutrons/cm² sec.

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The macroscopic absorption cross section for aluminum can be calculated using the following formula a 1I1 1I2 d where a is the macroscopic absorption ... View the full answer