A (proton shell) can be closed.Logical formLearned from3 sentences. A (proton gradient) may undergo a creation.Logical formLearned from3 sentences. Bombardment can be with protons.Logical formLearned from3 sentences. An electric charge may pertain-to a proton.Logical formLearned from3 sentences. A (charge radius) may pertain-to a proton.Logical formLearned from3 sentences. Baryons can be a proton.Logical formLearned from3 sentences. Exchange can be for a proton.Logical formLearned from3 sentences. Millions can be constituted-of-or-filled-with (proton collisions).Logical formLearned from3 sentences. An atom may have protons.Logical formLearned from3 sentences. A (hydrogen atom) may consist of a proton.Logical formLearned from3 sentences. Experiments may use some beams of protons.Logical formLearned from3 sentences. Nuclear interactions may pertain-to protons.Logical formLearned from3 sentences. A study of effects of nuclear interactions of protons may be included.Logical formLearned from3 sentences. Batches can be constituted-of-or-filled-with protons.Logical formLearned from3 sentences. Constituents may pertain-to a proton.Logical formLearned from3 sentences.