Find the effective cross section for thermal neutrons

Reference no: EM131014042

In a nuclear reactor, the effective cross section for thermal neutrons in uranium is the weighted average of the cross sections for the 235 and 238 isotopes present. The thermal neutron cross section is zero for 238U and 580 barns for 235U. Find the effective cross section for thermal neutrons in a reactor that contains (a) natural uranium and (b) uranium enriched to 2.0% 235U.

Reference no: EM131014042

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