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History 181B: Modern Physics

Worksheet 9
 

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Target date 4/23/03
Questions 1.  Why was the neutron so important for nuclear theory? For nuclear experimentation?
2.  Why did Fermi's group think they had discovered transuranic elements?
3.  What had they discovered instead? What did it take to make this clear?
4.  Why didn't most physicists predict fission?
5.  When a nucleus undergoes fission, what are the products of the reaction?
6.  What feature of fission makes a chain reaction possible?
7.  What is the critical mass?
8.  What is the difference between a controlled and an uncontrolled chain reaction?
9.  Why is isotope separation necessary to build a bomb from uranium?
10. Describe the plutonium route to a bomb.



Copyright © Cathryn Carson 2003