estimate the critical mass of sphere of 92U238. assuming that the fission and radiative capture cross section are equal.the absorption cross section for fission neutrons is 5 barns . the density of the uranium is 18*10^3 kg /m^3 -

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A: a) For the case of sphere,

Q: 2. Compare the excitation and activation energies for thermal neutron-induced fission of a) 93Nº²37…

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Q: 40.12 A sample of material contains 2.00 x 1015 atoms. The sample initially consists entirely of a…

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Q: an life of 7.2 days ay. Subsequently,

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A: Given, For Zr, A=55.8ρ=6.5g/cm3σs=8bσa=0.18b n=ρNAAn=6.5×6.023×102355.8n=0.702×1023 1 barn=10-24cm2…

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A: Given, The neutron activity of PuBe is A=1.6×105 Bq product by the neutron through is, B9eα,nC12…

Q: Q5: Energetic neutrons bombard an aluminum foil of thickness 0.20 mm. The aluminum nuclei undergo…

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