10.1Nuclearenergy

10.1Nuclearenergy - Curve of the Binding Energy/nucleon...

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1 10.1 Nuclear energy Nuclear Fission Nuclear Fusion Curve of the Binding Energy/nucleon fusion fission Energy can be released by nuclear reactions of Fusion and Fission 1MeV/nucleon Natural radioactivity Many elements found in nature are unstable and decay emitting radioactivity. These include Uranium, 238 U , Radon 224 Ra and Potassium 40 K. Carbon 14 C, The half lives of natural radio-isotopes are long. Not useful as sources for power. Low Power output. Nuclear Power • Nuclear power requires induced nuclear fission. • Nuclear fission can be induced by neutrons in a chain reaction. • Nuclear fusion can be induced by collisions at high temperature. Induced Nuclear reactions Combining nuclei (Fusion) Neutron reactions (Fission) 22 31 11 1 1 DD TH +⎯ →+ 1 235 141 92 1 09 2 5 6 3 6 0 nU B a K r 3 n + Can result in short half lives- fast reactions-high energy density + Energy + Energy Fission of Uranium Enrico Fermi (1936) “Transuranium elements” Fast neutrons uranium Found induced radioactivity Bombard uranium with neutrons parafilm Neutron Source (radon+Be) Slow neutrons nn
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10.1Nuclearenergy - Curve of the Binding Energy/nucleon...

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