(radioactive decay)
121beta decay — noun Date: 1931 a radioactive nuclear transformation governed by the weak force in which a nucleon (as a neutron) changes into a nucleon (as a proton) of the other type with the emission of either an electron and an antineutrino or a positron and …
122alpha decay — /ælfə dəˈkeɪ/ (say alfuh duh kay) noun radioactive disintegration in which alpha particles are emitted …
123beta decay — /ˈbitə dəˌkeɪ/ (say beetuh duh.kay) noun a radioactive transformation in which beta particles are emitted …
124radioactiveseries — radioactive series n. A group of isotopes representing various stages of radioactive decay in which the heavier members of the group are transformed into successively lighter ones, the lightest being stable. * * * …
125радиоактивный распад — radioactive decay радиоактивный распад. Cамопроизвольное деление (ядерное превращение) радионуклидов, сопровождающееся испусканием заряженных частиц или фотонов. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А.,… …
126radioactivedecay — radioactive decay n. 1. Spontaneous disintegration of a radionuclide accompanied by the emission of ionizing radiation in the form of alpha or beta particles or gamma rays. 2. An instance of such disintegration. * * * …
127radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …
128dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …
