Knowra Emilio Segrè Emilio Segrè Emilio Segrè was an Italian-American physicist who discovered technetium and astatine and shared the 1959 Nobel Prize in Physics for discovering the antiproton.
Owen Chamberlain : An American physicist who shared the 1959 Nobel Prize in Physics for discovering the antiproton. He collaborated with Segrè in the antiproton experiment at the University of California, Berkeley.
Antiproton : The negatively charged antiparticle of the proton, with the same mass and opposite electric charge. Segrè and Chamberlain identified this particle in accelerator-produced collision products.
University of Rome Sapienza : A public research university in Rome, founded in 1303 and known as Sapienza University of Rome. Segrè studied physics there and became part of Fermi’s research group.
Technetium : A radioactive chemical element with atomic number 43, the first element to be produced artificially. Segrè and Carlo Perrier identified it in irradiated molybdenum in 1937.
Ernest Lawrence : An American physicist who invented the cyclotron and founded a major accelerator laboratory at Berkeley. Segrè worked at Lawrence’s Radiation Laboratory, where accelerators enabled his nuclear research.
Bevatron : A particle accelerator at Berkeley that began operating in 1954 and reached energies sufficient to produce antiprotons. Its proton beam enabled the experiment that established the antiproton’s existence.
Via Panisperna boys : A group of young Italian physicists who worked with Enrico Fermi in Rome during the 1930s. Segrè was a member of this group before leaving Italy for the United States.
Astatine : A highly radioactive chemical element with atomic number 85, found only in trace amounts in nature. Segrè, Dale R. Corson, and Kenneth Ross MacKenzie produced and identified it in 1940.
Enrico Fermi : An Italian-American physicist whose work spanned quantum theory, nuclear physics, and the first nuclear reactor. Segrè studied under Fermi in Rome and joined his group’s experimental research.
Particle accelerator : A machine that uses electric fields to accelerate charged particles and magnetic fields to guide them. Accelerators supplied the high-energy particles used in Segrè’s antiproton research.
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