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ProblemSet-6-2005 - NE-524 Interaction of radiation with...

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NE-524 Interaction of radiation with Matter Problem Set #6 (Complete by 11/20/2005) 1) Aluminum bronze, an alloy containing 90% Cu and 10% Al by weight has a density of 7.6 g/cc. What are the linear and mass attenuation coefficients? ( σ Cu = 9.91 and σ Al = 4.45 barns) 2) Compute the thickness of Al and Pb to transmit 10% of a narrow beam of 0.1 MeV photons. 3) What fraction of their energies do 1 MeV and 0.1 MeV photons lose if they are scattered through an angle of 90 o ? 4) In an experiment, it was found that a 1 cm thick lead absorber attenuated a 10 MeV neutron flux to 84.5% of its initial value. What is the total cross section? (Pb atomic weight = 207.21, ρ = 11.3 g/cc) 5) A sample containing an unknown quantity of chromium is irradiated for one week in
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