Assertion: gamma irradiation | /r/HasProperty | produced
Facets:
value: from the radioisotopes
type: OTHER
value: from caesium-137
type: TEMPORAL
Source sentences:
text: Gamma irradiation is produced from the radioisotopes cobalt-60 and caesium-137, which are derived by neutron bombardment of cobalt-59 and as a nuclear source by-product, respectively.