Page "Rutherfordium" Paragraph 31
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They observed decays from < sup > 260 </ sup > Rf and < sup > 259 </ sup > Rf, and later for < sup > 259 </ sup > Rf.
In 2006, as part of their program on the study of uranium targets in hot fusion reactions, the team at LBNL also observed < sup > 261 </ sup > Rf .< ref name =
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2.073 seconds.