BEBEproductsBEreactantsBERb 93BECs 140BEU 235809 MeV1176 MeV1786 MeV199 MeV10n23592U23692U14055Cs9337Rb310nMass differenceMass of ReactantsMass of Products236.052589 amu235.85208 amu0.200509 amuEInst0.020059 amu931.5 MeVamu186.8 MeVAtomic and Nuclear PhysicsDOE-HDBK-1019/1-93ENERGY RELEASE FROM FISSIONRev. 0Page 59NP-01The energy released will be equivalent to the difference in binding energy ( BE) between thereactants and the products.The energy liberation during the fission process can also be explained from the standpoint of theconservation of mass-energy. During the fission process, there is a decrease in the mass of thesystem. There must, therefore, be energy liberated equal to the energy equivalent of the masslost in the process. This method is more accurate than the previously illustrated method and isused when actually calculating the energy liberated during the fission process.Again, referring to the "typical" fission reaction.E , the instantaneous energy, is the energy released immediately after the fission process. ItInstis equal to the energy equivalent of the mass lost in the fission process. It can be calculated asshown below.MassoftheReactantsMassoftheProductsU235.043924 amuRb92.91699 amu235929337n1.008665 amuCs139.90910 amu10140553 ( n) 3.02599 amu 10236.052589 amu235.85208 amuThis mass difference can be converted to an energy equivalent.
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