Instabilities against exotic cluster decays in "stable" nuclei with Z and N in the neighborhood of spherical and deformed closed shells.

摘要: The possible exotic cluster decay modes of some stable'' nuclei in the region 50[lt][ital Z][lt]82 are calculated using a preformed model. predicted half-life times for certain decays [sub 56][sup 120]Ba[sub 64] and 80][sup 186]Hg[sub 106] nuclei, which lie neighborhood spherical magic shells [ital Z]=50 82 deformed shell N]=108, interesting cases instabilities present regions nuclei. These [sup 12]C 16]O 120]Ba 8]Be 186]Hg, whose to be [similar to]10[sup 22], 10[sup 26], 28] s, respectively. last case is an exciting new possibility radioactivity with daughter nucleus. Experimentally, however, both parent short lived their suggested cannot observed. In any case, study invokes further work look other similar various It that these measurable can used obtain related nuclear structure effects. effects reinforcement gaps weak closed shellmore » at Z]=64 deformation starting begin N][similar to]90 also discussed.« less