The cross-section in barns when the slow neutrons with hydrogen atoms.

Question

Want to see the full answer?

Answer 1

Question

Chapter 14, Problem 11P

To determine

The cross-section in barns when the slow neutrons with hydrogen atoms.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

An aluminum foil of thickness 0.30 mm is bombarded by energetic neutrons. The aluminum nuclei undergo neutron capture according to the process 2Al(n,y)28 Al, with a measured capture cross section of 2.0×1031 m². Assuming the flux of incident neutrons to be 5.0×10¹2 neutrons/ cm²-s, calculate the number of neutrons captured per second by 1.0 cm² of the foil. The density of aluminum is 2.7 g/cm³.

To determine the wear of an automobile engine, a steel compression ring is placed in a nuclear reactor, where it becomes neutron activated because of the formation of 59Fe(t1/2 = 44.5 days, β-). The activity of the ring when placed in the engine is 4.0 x 105 Bq. Over the next 60 days, the car is driven 100,000 km on a test track. The engine oil is extracted, and the activity rate of the oil is measured to be 512 β - /min. What fraction of the ring was worn off during the test?

4. A multiplying medium has a neutron population of 1.0 x 1012 neutrons per cubic centimeter at time t = 10 seconds. At time t = 35 seconds, the neutron population is 6.3 x 104 neutrons per cubic centimeter. (a) What is the period in this system? (b) If the neutron lifetime is 0.02 seconds, what is the multiplication factor in this medium?