Assertion: successive disintegration | /r/HasSubevent | stable end-product radiocarbon
Facets:
value: ultimately
type: DEGREE
Source sentences:
text: (t 1/2 ) time required for half of the atoms in a radioactive sample to decay parent nuclide unstable nuclide that changes spontaneously into another (daughter) nuclide positron emission (also, β+ decay) conversion of a proton into a neutron, which remains in the nucleus, and a positron, which is emitted radioactive decay spontaneous decay of an unstable nuclide into another nuclide radioactive decay series chains of successive disintegrations (radioactive decays) that ultimately lead to a stable end-product radiocarbon dating highly accurate means of dating objects 30,000–50,000 years old that were derived from once-living matter; achieved by calculating the ratio of 614C:612C614C:612C in the object vs. the ratio of 614C:612C614C:612C in the present-day atmosphere radiometric dating use of radioisotopes and their properties to date the formation of objects such as archeological artifacts, formerly living organisms, or geological formations