51. Energy and momentum are conserved. We assume the residual thorium nucleus is in its ground state. Let Kαbe the kinetic energy of the alpha particle and KThbe the kinetic energy of the thorium nucleus. Then, Q = K+ KTh. We assume the uranium nucleus is initially at rest. Then, conservation of momentum yields 0 = p+ pTh, where pis the momentum of the alpha particle and pThis the momentum of the thorium nucleus. Both particles travel slowly enough that the classical relationship between momentum
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This note was uploaded on 05/19/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.