Fitxategi:Berkeley 60-inch cyclotron.jpg

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English: Photograph shows the 60-inch cyclotron at the University of California Lawrence Radiation Laboratory, Berkeley, in August, 1939. The metal frame at left is the machine's huge electromagnet. The flat vacuum chamber in which the particles are accelerated is located in the narrow space between the magnet's 60 inch (152 centimeter, 5 foot) pole pieces. The beamline which analyses the particles resulting from the collisions is at right.

The machine was the most powerful particle accelerator in the world at the time. It had started operating early in the year. During the period of the photograph Dr. Edwin M. McMillan was doing the work which led to the discovery of neptunium (element 93) a year later. The instrument was used later by Dr. Glenn T. Seaborg and his colleagues for the discovery of element 94 (plutonium) early in 1941. Subsequently, other transuranium elements were discovered with the machine, as well as many radioisotopes, including carbon-14. For their work, Drs. Seaborg and McMillan shared the Nobel Prize in 1951. The machine was used for the "long bombardments" which produced the first weighable and visible quantities of plutonium, which was used at Chicago by Seaborg and his colleagues to work out the method for separating plutonium on an industrial scale at the Hanford, Washington, plutonium pro...
Русский: Фотография показывает 60-дюймовый циклотрон в университете Лаборатории California Lawrence Radiation, Беркли, в августе 1939. Машина была самым сильным ускорителем частиц в мире в то время.
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This media is available in the holdings of the National Archives and Records Administration, cataloged under the National Archives Identifier (NAID) 558594.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

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Egilea Department of Energy. Office of Public Affairs
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Public domain This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

Please note that national laboratories operate under varying licences and some are not free. Check the site policies of any national lab before crediting it with this tag.

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oraingoa20:27, 20 urria 200920:27, 20 urria 2009 bertsioaren iruditxoa3.000 × 2.409 (2,3 MB)Pieter Kuiperhigher resolution from http://narademo.umiacs.umd.edu/cgi-bin/isadg/viewobject.pl?object=95114
21:12, 17 abuztua 200821:12, 17 abuztua 2008 bertsioaren iruditxoa600 × 482 (104 KB)Pieter Kuiper{{Information |Description={{en|1=60-inch cyclotron at the University of California Lawrence Radiation Laboratory, Berkeley.}} |Source={{NARA-image|id=558594}} |Author=Department of Energy (?) |Date=1939 |Permission={{PD-USGov-DOE}} |other_versions= }} <

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