Fusion of light nuclei is regarded as more energetic per unit mass of fuel than…
PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics
Problem
Fusion of light nuclei is regarded as more energetic per unit mass of fuel than fission of 235U even though each fusion event releases less energy than a single fission. The MAIN reason is that
(a) in fission a large part of the energy is lost as invisible radiation
(b) binding energy per nucleon in fusion products is lower than in fission products
(c) many more fusion reactions can occur per kilogram because the reacting nuclei are much lighter
(d) fusion reactions additionally release appreciable energy carried by neutrinos