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Fission Reaction Problem

  1. Dec 10, 2006 #1
    1. The problem statement, all variables and given/known data

    1_0_n + 235_92_U 140_54_Xe + 94_38_Sr + 2 1_0_n
    Using the above reaction, determine the amount of energy.


    2. Relevant equations

    mi = 235.043925u + 1.008665u + 236.05259u
    mf = 140.914406u + 93.915356U + 2(1.008665u) = 236.847092Uu
    delta m = 0.794502
    E = deltam(c^2) = (0.794505u)(931.5MeV/c^2/u)c^2 = 740.078613

    3. The attempt at a solution

    See above in part . My answer is incorrect. I double checked my work, and I got the same answer. Can anybody figure out what I'm doing wrong? Thanks.
     
  2. jcsd
  3. Dec 10, 2006 #2

    Astronuc

    User Avatar

    Staff: Mentor

    Compare:

    mi = 235.043925u + 1.008665u

    m (U-236) = 236.05259u

    mf = 140.914406u + 93.915356U + 2(1.008665u)


    235U + n -> 236U* -> FP + 2n
     
  4. Dec 10, 2006 #3
    Okay, how do I incorporate the middle product into my equation? The book wasn't too good with explaining that part.
     
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