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Nuclear physics

  1. Jan 29, 2016 #1
    1. The problem statement, all variables and given/known data
    In a particular nuclear reaction, a neutron moving at 3.6×105ms−1 has a 70% chance of initiating a nuclear fusion reaction. Which of the following options is a possible probability of a neutron moving at 2.2×105ms−1 initiating the same nuclear reaction?

    I wouldn't be asking this if I really didn't know where to start. I don't even know which formula to use or how to begin solving this. Any help would be greatly appreciated, thanks!
  2. jcsd
  3. Jan 29, 2016 #2


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    2016 Award

    Staff: Mentor

    Where are the options?
    Are there any reactions where you know if the cross-section is higher or lower for higher/lower speeds?
  4. Jan 29, 2016 #3
    Yeah, the options are
    A) 70%
    B) 0%
    C) 82%
    D) 56%
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