Wikipedia says about this:Purdue University announced today that one of its nuclear engineers was guilty of scientific misconduct in work related to his potentially revolutionary findings about creating fusion from bubbles.
The announcement represented an about-face for the university, which more than a year ago declared that the scientist, Rusi P. Taleyarkhan, was not guilty of misconduct. The university had come under fire from members of the U.S. House of Representatives for that earlier assertion, and subsequently started a new investigation.
In 2004, new reports of bubble fusion were published by the Taleyarkhan group, saying that the results of previous experiments have been replicated under more stringent experimental conditions. These results differed from the original results in that fusion was occurring for a much longer time frame than previously reported. The original report only showed neutron emission from the initial bubble collapse following bubble nucleation, whereas this report showed neutron emission many acoustic cycles later. The data, however, was less than stringent insofar as too large a window of measurement was used to determine a coincidence between neutron emission and sonoluminescent light emission. Furthermore, the energy of the detected neutrons was not consistent with neutrons produced from a fusion reaction.
In July 2005, two of Taleyarkhan's students at Purdue University published evidence confirming the previous result. They used the same acoustic chamber, the same deuterated acetone fluid and a similar bubble nucleation system. In this report, no neutron-sonoluminescence coincidence was attempted. Once again, the neutron energies measured were not consistent with those of neutrons produced by a d-d fusion reaction.
Last edited by a moderator: