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-   -   Fission Reaction Problem (http://www.physicsforums.com/showthread.php?t=147569)

FlipStyle1308 Dec10-06 02:31 PM

Fission Reaction Problem
 
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 [b]. 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.

Astronuc Dec10-06 02:36 PM

Compare:

mi = 235.043925u + 1.008665u

m (U-236) = 236.05259u

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


235U + n -> 236U* -> FP + 2n

FlipStyle1308 Dec10-06 04:52 PM

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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