NUC 303- Calculate the macroscopic thermal neutron absorption
Question # 00447668
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Updated on: 12/22/2016 11:01 PM Due on: 12/23/2016
1. Calculate the macroscopic thermal neutron absorption cross section for natural uranium.
(ignore the trace amounts of 234U; the a/o of 235U in natural uranium is .72, and the a/o of
the 238U is .9928)
(ignore the trace amounts of 234U; the a/o of 235U in natural uranium is .72, and the a/o of
the 238U is .9928)
2. Calculate the macroscopic thermal neutron absorption cross section for uranium enriched to 5%
a/o 235U.
a/o 235U.
3. Calculate the mean free path for scattering of neutrons in light water. The scattering crosssection for water is 103 barns and the number density of water is .03343x1024 atoms/cm3.
4. Plot on an Excel graph the change in the absorption cross section of 10B over the temperature
range of 68°F to 600°F. Assume the microscopic absorption cross-section of 10B is 3840 barns at
68°F.
range of 68°F to 600°F. Assume the microscopic absorption cross-section of 10B is 3840 barns at
68°F.
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Solution: NUC 303- Calculate the macroscopic thermal neutron absorption