30_InstSolManual_PDF_Part8

# 30_InstSolManual_PDF_Part8 - 30-8 Chapter 30 Solve(a E 5 1...

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Solve: (a) The absorbed energy is (b) The absorbed dose is Since the equivalent dose is 0.0828 rem. 30.31. Set Up: The total energy of the two photons equals the rest mass energy of the pion. Solve: (a) so These are gamma ray photons, so they have (b) Each pion delivers The absorbed dose is The energy deposited is The number of mesons needed is Reflect: Note that charge is conserved in the decay since the pion is neutral. If the pion is initially at rest the photons must have equal momenta in opposite directions so the two photons have the same and are emitted in opposite directions. The photons also have equal energies since they have the same momentum and 30.32. Set Up: The amount of kinetic energy released is the energy equivalent of the mass change in the decay. and the atomic mass of is 14.003074 u. The energy equivalent of 1 u is 931.5 MeV. has a half-life of The RBE for an electron is 1.0. Solve: (a) (b) The mass decrease is Use nuclear masses, to avoid difficulty in accounting for atomic electrons. The nuclear mass of is
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