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Half-lives and the Fission Barrier

  1. Apr 30, 2012 #1
    I could use a basic explanation of how half-lives are associated with the fission barrier. Are half-lives still present in induced fission and not just spontaneous fission?

  2. jcsd
  3. May 1, 2012 #2


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    Staff: Mentor

    In induced fission, the nucleus either reacts with the neutron or it does not. This is not time-related, and the probability that it reacts is usually expressed via its cross-section.

    Spontaneous fission can occur at any time (if it is possible), so you can determine how frequent it happens in some sample, and give a half-life.
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