File:Chadwick Neutron Discovery.png
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English: A schematic diagram of the experiment James Chadwick used to discover the neutron in 1932. At left, a polonium source was used to irradiate beryllium with alpha particles, which induced a type of uncharged radiation initially thought to be gamma rays. When this radiation struck paraffin wax, protons were ejected with ca. 5.5 MeV kinetic energy. The protons were observed using a small ionization chamber, called a counter, that detected a signal recorded on an oscillograph. Adapted from J. Chadwick, The Existence of a Neutron, Proc. Royal Society London, Series A, 136, 692-708, 1932. |
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| Author | Bdushaw |
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| current | 15:37, 10 November 2017 | | 1,600 × 799 (55 KB) | Bdushaw (talk | contribs) | User created page with UploadWizard |
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