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6 giorni fa · Plutonium (specifically, plutonium-238) was first produced, isolated and then chemically identified between December 1940 and February 1941 by Glenn T. Seaborg, Edwin McMillan, Emilio Segrè, Joseph W. Kennedy, and Arthur Wahl by deuteron bombardment of uranium in the 60-inch (150 cm) cyclotron at the Berkeley Radiation Laboratory at ...
2 giorni fa · As research on nuclear fission progressed in early 1939, Edwin McMillan at the Berkeley Radiation Laboratory of the University of California, Berkeley decided to run an experiment bombarding uranium using the powerful 60-inch (1.52 m) cyclotron that had recently been built at the university.
10 ore fa · Edwin McMillan and Philip Abelson used the cyclotron at the Berkeley Radiation Laboratory to bombard uranium with neutrons, were able to identify an isotope with a 23-minute half life that was the daughter of uranium-239, and therefore the real element 93, which they named neptunium. "There goes a Nobel Prize", Hahn remarked.
18 giu 2024 · Edwin Mattison McMillan (* 18. September 1907 in Redondo Beach, Kalifornien; † 7. September 1991 in El Cerrito, Kalifornien) war ein amerikanischer Physiker. 1951 wurde ihm zusammen mit Glenn T. Seaborg der Nobelpreis für Chemie verliehen.
15 giu 2024 · Edwin Mattison McMillan was an American physicist credited with being the first to produce a transuranium element, neptunium. For this, he shared the 1951 Nobel Prize in Chemistry with Glenn Seaborg. Edwin McMillan was born on September 18, 1907, in Redondo Beach, California, United States.
26 giu 2024 · 01. Discovered in 1940: Plutonium was first identified by scientists Glenn T. Seaborg, Edwin McMillan, Joseph W. Kennedy, and Arthur Wahl at the University of California, Berkeley. 02. Named After Pluto: The element was named after the dwarf planet Pluto, following the tradition of naming elements after planets, like uranium and neptunium. 03.
13 giu 2024 · Electron synchrotrons with energies near 300 MeV have been constructed in several countries, the first being the one built in 1949 at Berkeley under Edwin McMillan’s direction. In these accelerators the electrons were injected by a pulsed electron gun , and the initial acceleration from 50–100 keV to 2–3 MeV was induced as in a ...
