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A Flux of 1010 N/cm2 · S Is Incident on an

Question 72

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A flux of 1010 n/cm2 · s is incident on an  A flux of 10<sup>10</sup> n/cm<sup>2</sup> · s is incident on an   foil that is 0.10 cm thick.The density of aluminum is 2.7 g/cm<sup>3</sup>.The number of neutrons reacting with the aluminum is 10<sup>4</sup> n/cm<sup>2</sup> · s.The cross section for this reaction is approximately A) 10<sup>-6</sup> m<sup>2 </sup> B) 1.7  \times  10<sup>-28</sup> cm<sup>2 </sup> C) 1 barn D) 6.6  \times  10<sup>-32</sup> m<sup>2 </sup> E) 10<sup>4</sup> barn foil that is 0.10 cm thick.The density of aluminum is 2.7 g/cm3.The number of neutrons reacting with the aluminum is 104 n/cm2 · s.The cross section for this reaction is approximately


A) 10-6 m2
B) 1.7 ×\times 10-28 cm2
C) 1 barn
D) 6.6 ×\times 10-32 m2
E) 104 barn

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