Assertion: plutonium | /r/HasProperty | stabilized in low density delta phase
Facets:
value: by alloying it
type: MANNER
Source sentences:
text: The plutonium in the first American atomic bombs was stabilized in the low density delta phase (density 16.9) by alloying it with 3% gallium (by molar content, 0.8% by weight), but was otherwise of high purity.