All possible ternary fragmentations of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Cf</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>252</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>in collinear configuration

All possible ternary fragmentations in fission of $^{252}\mathrm{Cf}$ are studied in collinear configuration within a spherical approximation using the recently proposed ``three cluster model.'' The potential energy surface of collinear configuration exhibits a strong valley around $^{48}\mathrm{Ca}$ and its neighboring nuclei $^{50}\mathrm{Ca}$, $^{54}\mathrm{Ti}$, and $^{60}\mathrm{Cr}$. Such strong minima are not seen in the potential energy surface of an equatorial configuration. As a consequence of strong minima in the potential, the overall relative yield is higher for the ternary fragmentation with $^{48}\mathrm{Ca}$, $^{50}\mathrm{Ca}$, $^{54}\mathrm{Ti}$, $^{60}\mathrm{Cr}$, and $^{82}\mathrm{Ge}$ as the third fragment. The results of potential energy and relative yield calculations reveal that collinear configuration increases the probability of emission of heavy fragments like $^{48}\mathrm{Ca}$ (doubly magic nucleus) and its neighboring nuclei as the third fragment. The obtained results indicate that the collinear configuration is the preferred configuration for intermediate nuclei ($^{48}\mathrm{Ca}$, $^{50}\mathrm{Ca}$, $^{54}\mathrm{Ti}$, and $^{60}\mathrm{Cr}$) as the third fragment in particle accompanied fission while the equatorial configuration may be a preferred configuration for light nuclei ($^{4}\mathrm{He}$, $^{10}\mathrm{Be}$) as the third fragment.

Перевод пока недоступен