Assertion: berkelium's isotope | /r/HasProperty | produced
Facets:
value: from bombarding curium-248
type: OTHER
value: mostly
type: DEGREE
value: by bombarding actinide targets
type: MANNER
value: from thallium
type: LOCATION
value: from bismuth impurities
type: OTHER
value: from mercury
type: OTHER
value: from lead
type: OTHER
Source sentences:
text: Three californium isotopes with significant half-lives are produced, requiring a total of 15 neutron captures by uranium-238 without nuclear fission or alpha decay occurring during the process.
text: While later 1958 experiments noted that new isotopes could be produced from mercury, thallium, lead, or bismuth impurities, the scientists still stood by their conclusion that element 102 could be produced from this reaction, mentioning a half-life of under 30 seconds and a decay energy of (8.8 ± 0.5)
text: The isotopes of nobelium are mostly produced by bombarding actinide targets (uranium, plutonium, curium, californium, or einsteinium), with the exception of nobelium-262, which is produced as the daughter of lawrencium-262.
text: The most commonly used isotope, 255No, can be produced from bombarding curium-248 or californium-249 with carbon-12: the latter method is more common.