A Flux of 10¹⁴ N/m² · S Is Incident on an

question 78

Multiple Choice

A flux of 10¹⁴ n/m² · s is incident on an foil that is 0.10 cm thick. The density of aluminum is 2.7 * 10³ kg/m³. The number of neutrons reacting with the aluminum is 10⁶ n/m² · s. The cross section for this reaction is approximately

• A) 10⁴ barn
• B) 10^-6 m²
• C) 1.7 * 10^-34 m²
• D) 6.6 *10^-32 m²

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