{{Nuclear_processes}} :''This article is about the nuclear process. For the chemical process, see Internal_conversion_(chemistry)''. '''Internal conversion''' is a Radioactive_decay process where the Gamma_ray emitted from a nucleus is photoelectrically absorbed by one of the most tightly bound Electrons causing it to be ejected from the Atom. After the ejection of the internal conversion electron the vacancy is filled by another shell electron with a corresponding emission of one or several X-rays or Auger_electrons. Internal conversion is favored when the energy gap between nuclear levels is small, and is also the only mode of de-excitation for 0+ -> 0+ (ie. E0) transitions. It is the predominant mode of de-excitation whenever the initial and final spin states are the same, but the multipolarity rules for nonzero initial and final spin states do not necessarily forbid the emission of a gamma ray in such a case. The tendency towards internal conversion can be determined by the Internal_conversion_coefficient, which is empirically determined by the ratio of de-excitations that go by the emission of electrons to those that go by gamma emission. ==See also== *Internal_conversion_coefficient Category:Radioactivity{{physics-stub}} De:Innere_Konversion