Uranium series dating definition dictionary
Radioactivity may also be induced, or created artificially, by bombarding the nuclei of normally stable elements in a particle accelerator particle accelerator, apparatus used in nuclear physics to produce beams of energetic charged particles and to direct them against various targets.
The delay is expressed quantitatively by the radioactive decay constant, or by the mean life, or by the half-period for each type of radioactive atom, discussed below. For many nuclear isomers, the phenomenon of internal electron conversion is observed.
In wartime and times of international tension rumors abound, some of which may be deliberate hoaxes. After the discovery of fission init was subsequently discovered that isotopes like U had very weak decay branches for spontaneous fission, with branching ratios on the order of Some isotopes with relatively long half-lives such as Cf have large 3.