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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
32
Elementary Particles
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32-1: Particles and Accelerators
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32-2 to 32-6: Particle Interactions, Particle Exchange
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32-7 to 32-11: Resonances, Standard Model, Quarks, QCD, GUT
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 7
Q

Which is better for resolving details of the nucleus: 25-MeV alpha particles or 25-MeV protons? Compare each of their wavelengths with the size of a nucleon in a nucleus.

A
λα=2.88×10−15 m, \lambda_{\alpha} = 2.88 \times 10^{-15} \textrm{ m, } λp=5.75×10−15 m\lambda_{p} = 5.75 \times 10^{-15} \textrm{ m}
The ratio of wavelength to the diameter of a nucleon is, for an alpha particle: 1.21.2, whereas for a proton: 2.42.4. The alpha particle will provide better resolution since it's wavelength is comparatively smaller.
Giancoli 7th Edition, Chapter 32, Problem 7 solution video poster
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