Results are presented from a search for fractional charges on mercury drops. About 100 000 drops have been measured, comprising 60 Mg of refined mercury and 115 jxg of native mercury. No fractionally charged drops were observed in this sample.
An experiment was performed to capture fractionally charged particles produced in heavy-ion collisions and to concentrate them in samples suitable for analysis by various techniques. Two of the samples so produced have been searched, with use of an automated version of Millikan's oil-drop apparatus. The beam was ' Fe at 1.9 GeV/nucleon, incident on a lead target. Less than one fractional charge per 1.0&&10 Fe-Pb collisions was found to be produced, and, with further assumptions, less than one per 2.0& 10 collisions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.