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 Emilio
Segrč was born in Tivoli, Rome, on February 1st, 1905, as the son of
Giuseppe Segrč, industrialist, and Amelia Treves. He went to school in Tivoli
and Rome, and entered the University of Rome
as a student of engineering in 1922. In 1927 he changed over to physics and took
his doctor's degree in 1928 under Professor Enrico
Fermi, the first one under the latter's sponsorship.
He served in the Italian Army in 1928 and 1929, and entered the University of
Rome as assistant to Professor Corbino in 1929. In 1930 he had a Rockefeller
Foundation Fellowship and worked with Professor Otto Stern at Hamburg, Germany,
and Professor Pieter Zeeman at Amsterdam, Holland. In 1932 he returned to Italy
and was appointed Assistant Professor at the University of Rome, working
continuously with Professor Fermi and others. In 1936 he was appointed Director
of the Physics Laboratory at the University of Palermo, where he remained until
I938.
In 1938 Professor Segrč came to Berkeley,
California, first as a research associate in the Radiation Laboratory and later
as a lecturer in the Physics Department. From 1943 to 1946 he was a group leader
in the Los Alamos Laboratory of the Manhattan Project. In 1946 he returned to
the University of California at Berkeley as a Professor of Physics, and still
occupies that position.
The work of Professor Segrč has been mainly in atomic and nuclear physics. In
the first field he worked in atomic spectroscopy, making contributions to the
spectroscopy of forbidden lines and the study of the Zeeman effect. Except for a
short interlude on molecular beams, all his work until 1934 was in atomic
spectroscopy. In 1934 he started the work in nuclear physics by collaborating
with Professor Fermi on neutron research. He participated in the discovery of
slow neutrons and in the pioneer neutron work carried on in Rome 1934-1935.
Later he was interested in radiochemistry and discovered together with Professor
Perrier the element technetium, together with Corson and Mackenzie the element
astatine, and together with Kennedy, Seaborg, and Wahl, plutonium-239 and its
fission properties.
His other investigations in nuclear physics cover many subjects, e.g.,
isomerism, spontaneous fission, and lately high-energy physics. Here he, his
associates and students have made contributions to the study of the interaction
between nucleons and on the related polarization phenomena. In 1955 together
with Chamberlain, Wiegand, and Ypsilantis he discovered the antiproton. The
study of antinucleons is now his major subject of research.
Professor Segrč has taught in temporary appointments at Columbia
University, New York, at the University
of Illinois, at the University of Rio de
Janeiro and in several other institutions. He is a member of the National
Academy of Sciences (U.S.A), of the Academy of Sciences at Heidelberg
(Germany), of the Accademia Nazionale dei Lincei of Italy, and of other learned
societies. He has received the HoEmann Medal of the German Chemical Society and
the Cannizzaro Medal of the Italian Accademia dei Lincei. He is an Honorary
Professor of San Marcos University in
Peru and has an honorary doctor's degree of the University
of Palermo, Italy.
Professor Segrč is married to Elfriede Spiro; they have a son, Claudio, and two
daughters, Amelia and Fausta.
From Nobel
Lectures, Physics 1942-1962.
Professor Segrč died in 1989
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