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Nuclear Fission

Nuclear Fission . Lise Meitner , Otto Hahn & Leo Szilard Lina Brouse and Kelly Scott. Lise Meitner D.O.B 7 November 1878- 27 October 1968. from Vienna, Austria head of the dept. of Physics at the Kaiser Wilhelm Institute (in the basement)

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Nuclear Fission

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  1. Nuclear Fission LiseMeitner, Otto Hahn & Leo Szilard Lina Brouse and Kelly Scott

  2. Lise Meitner D.O.B 7 November 1878- 27 October 1968 • from Vienna, Austria • head of the dept. of Physics at the Kaiser Wilhelm Institute (in the basement) • For decades she collaborated closely with Otto Hahn, with whom she co-discovered protactinium in 1917 • (1938) After fleeing from the Nazis she worked at the Nobel Physical Institute in Stockholm where she realized she had split an uranium nucleus, calling it fission • Eventually opened the doors for making atomic bombs

  3. Otto Hahn D.O.B. 28 July 1879- 28 July 1968 • Born in Frankfurt am Main, German Empire • Met Meitner in 1907 and helped her escape to safety in the Netherlands(1938) • Also worked with Fritz Strassmann (bottom right) • Received the Nobel Prize for Chemistry from his discoveries of nuclear fission

  4. LeóSzilárdD.O.B. February 11, 1898- May 30, 1964 • Born in Budapest, Hungary • Didn’t work with Hahn and Meitner, but with Enrico Fermi (bottom right) • was a part of the Manhattan Project in creating atomic bombs • was the co-inventor with Enrico Fermi of the first nuclear reactor

  5. Nuclear Fission • Nuclear fission is the reaction from a subatomic particle hitting a larger isotope, causing the nucleus of the isotope to split, resulting in the release of energy. • Along with the energy, the reaction creates more isotopes to be released, causing a chain reaction. • Nuclear fission could be man-made or found in nature as a form of radioactive decay

  6. Nuclear Fission (cont.) • Fission is also a form of transmutation • Barium was found to be a product of nuclear fission with uranium. • Nuclear Fission may give off a good, dense amount of energy, but it gives off more radioactivity • In order for nuclear fission to take place, there must be a large amount of the substance and it must have high speed neutrons.

  7. Contributions • Otto Hahn first discovered Barium-141, while working on the effects of neutrons involving Uranium-235. • This lead Lise Meitner to work with the neutron bombardment which resulted in her discovery that fission generated a great amount of energy in emitted. • She also discovered the chain reaction from the fission.

  8. Contributions (cont.) • Leó Szilárd also became aware of this chain reaction using uranium and thought of how this energy and reaction could be put to use like a nuclear reactor or atomic bombs. • He also worked with Albert Einstein to help President Franklin Roosevelt with an atomic bomb in WWII

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