niversity of Chicago; intense
neutron bombardment of plutonium
in nuclear reactors.
------------------------------------------------------------------------
96 Curium (Cm) 242 1945; Berkeley scientists A.
Ghiorso, R. A. James, and G. T.
Seaborg at the University of
Chicago; bombardment of Pu<239>
by 32-MeV helium ions from the
60-inch cyclotron.
------------------------------------------------------------------------
97 Berkelium (Bk) 243 1949; S. G. Thompson, A. Ghiorso,
and G. T. Seaborg; University of
California at Berkeley; 35-MeV
helium-ion bombardment of
Am<241>.
------------------------------------------------------------------------
98 Californium (Cf) 245 1950; S. G. Thompson, K. Street,
A. Ghiorso, G. T. Seaborg;
University of California at
Berkeley; 35-MeV helium-ion
bombardment of Cm<242>.
------------------------------------------------------------------------
99 Einsteinium (Es) 253 1952-53; A. Ghiorso, S. G.
100 Fermium (Fm) 255 Thompson, G. H. Higgins, G. T.
Seaborg, M. H. Studier, P. R.
Fields, S. M. Fried, H. Diamond,
J. F. Mech, G. L. Pyle, J. R.
Huizenga, A. Hirsch, W. M.
Manning, C. I. Browne, H. L.
Smith, R. W. Spence; "Mike"
explosion in South Pacific; work
done at University of California
at Berkeley, Los Alamos Scientific
Laboratory, and Argonne National
Laboratory; both elements created