Assertion: californium's isotope | /r/ObjectUse | used as a neutron source
Facets:
value: in medicine
type: LOCATION
value: in mining
type: LOCATION
value: in etc
type: LOCATION
Source sentences:
text: 98: an isotope ( californium-252 ) with a half-life of 2.65 years is used as a neutron source in mining, medicine, etc.