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3
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How nucleons get excited? [duplicate]
Gamma rays can be released when nucleons at higher energy states fall down to lower energy states, but how do nucleons get that much high energy to release gamma rays?
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42
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7
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Do nuclei emit photons?
Generally in text books they say that when a electron goes from high energy state to a lower energy state it emits photons.
My question is, it is possible that a proton that goes from high energy ...
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why is cross section of pair production in field of electron smaller than that in the field of nucleus?
Pair production cannot take place in a vaccum since momentum conservation would be violated. However it can take place in the field of a nucleus or an atomic electron. Why, though, is the cross ...
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