One laboratory used it to synthesize plutonium hexafluoride at unprecedentedly low temperatures , which was significant .
Previous methods for preparation needed temperatures so high that the plutonium hexafluoride created would rapidly decompose .
One laboratory used it to synthesize plutonium hexafluoride at unprecedentedly low temperatures , which was significant because previous methods for preparation needed temperatures so high that the plutonium hexafluoride created would rapidly decompose .