postulates neutrino Wolfgang Pauli (1936): massless, chargeless particle (detected in 1956) + no p+ + e- Splitting the ‘atom’ 1932: (Rutherford group, Cambridge) Cockcroft and Walton Experiment Linear accelerator: protons accelerated in electric field to 1 MeV Fired at Lithium atoms: alpha particles detected on zinc screens Explanation Li atoms split into 2 helium nuclei First transmutation of elements by artificial means Verification of (Einstein) E = mc2 Verification of quantum tunnelling (Gamow) Nobel Prize (1951)
Wolfgang Pauli (1936): postulates neutrino massless, chargeless particle (detected in 1956) no p+ + e- + Splitting the ‘atom’ 1932: Cockcroft and Walton (Rutherford group, Cambridge) Experiment Linear accelerator: protons accelerated in electric field to 1 MeV Fired at Lithium atoms: alpha particles detected on zinc screens Explanation Li atoms split into 2 helium nuclei First transmutation of elements by artificial means Verification of E = mc2 (Einstein) Verification of quantum tunnelling (Gamow) Nobel Prize (1951)
fintroduction-to-particle-physics22.docx