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# 9: Special Topic - Nuclear Physics

• 9.1: Nuclear Structure
Our tour of the realm of the very small would not be complete without venturing deeper than mere atomic shells – we have to proceed into the nucleus itself.
• 9.2: Nuclear Reactions
We discuss energy needed to separate nuclei in the same manner that we discussed energy needed to ionize a hydrogen atom. But there are a few twists in the case of nuclei that were not present for the hydrogen atom.