 In the late nineties, a team at Columbia University and MIT developed the Levitated dipole a fusion device which consisted of a superconducting electromagnet, floating in a saucer shaped vacuum chamber.Plasma swirled around this donut and fused along the center axis.In the March 8, 2002 issue of the peer-reviewed journal "Science", Rusi P. Taleyarkhan and colleagues at the Oak Ridge National Laboratory (ORNL) reported that acoustic cavitation experiments conducted with deuterated acetone () showed measurements of tritium and neutron output consistent with the occurrence of fusion.