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Problem

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question

What is the number of radioactive nuclei formed per sec-ond for an aluminum foil 1.5 cm^2 in area and 1.2 mm thick. This foil is bombarded by a flux of thermal neutrons equal 10^7 sec^-1 cm^-2 . Given that the cross section, \sigma of aluminum is 0.232 bam and its density = 2.7 ×10^3 kg m^-3.

category

chemistry

options

  1. 7.3 × 10^4 aluminum nuclei formed per second
  2. 2.5 × 10^4 aluminum nuclei formed per second
  3. 6.02 ×10^28 aluminum nuclei formed per second
  4. 3.0 × 10^5 aluminum nuclei formed per second
  5. 1.5 × 10^7 aluminum nuclei formed per second
  6. 9.0 × 10^1 aluminum nuclei formed per second
  7. 8.2 × 10^6 aluminum nuclei formed per second
  8. 5.0 × 10^3 aluminum nuclei formed per second
  9. 1.67 × 10^-3 aluminum nuclei formed per second
  10. 4.5 × 10^2 aluminum nuclei formed per second

src

stemez-PhysicalChemistry

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