Nuclear Fission (HSC SSCE Physics): Flashcards

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Nuclear fission
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Nuclear fission definition

Heavy nuclei split into lighter fragments, releasing energy

Elements that undergo fission

Elements heavier than iron-56

UU-235235 binding energy per nucleon

Approx. 7.67.6 MeV per nucleon

Fission fragments binding energy per nucleon

Approx. 8.68.6 MeV per nucleon

% binding energy released in fission

Approx. 26%26\%

Mass defect in fission

Mass difference between reactants & products

Einstein's mass-energy equation

E=mc2E = mc^2

Why fission useful despite low energy per event

Chain reactions multiply energy output

High binding energy per nucleon indicates

More stable nuclei

Fusion vs fission % energy release

Fusion 62%62\%, fission 26%26\%

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