Degrees of deformation at scission and correlated fission properties of atomic nuclei

摘要: The degrees of the deformation atomic nuclei at scission configurations mass-symmetric and mass-asymmetric fission modes are studied. \ensuremath{\beta} shape elongation fissioning nucleus, associated with asymmetric is found to be constant for ${A}_{f}=213\char21{}260,$ while that symmetric larger but also a wide range ${(A}_{f}=205\char21{}260)$ except low-energy induced spontaneous heavy ${A}_{f}=245\char21{}262$ where change nucleon number by one unit cause very rapid in \ensuremath{\beta}. A systematic correlation between properties such as mass-yield distribution TKE found. constancy gives rise new formulas ${\mathrm{TKE}}_{\mathrm{sym}}=0.1173\ifmmode\times\else\texttimes\fi{}{(Z}_{f}^{2}{/A}_{f}^{1/3})+7.5\mathrm{MeV}$ fission, ${\mathrm{TKE}}_{\mathrm{asym}}=0.1217\ifmmode\times\else\texttimes\fi{}{(Z}_{f}^{2}{/A}_{f}^{1/3})+3.5\mathrm{MeV}$ fission. physical origin well-known simple linear function released process invariance scissioning nuclei. mass dispersion products was have direct value; becomes larger, width yield wider. Our understanding nuclides ${}^{258}\mathrm{Fm}$ region presented. In this region, two different configurations, giving $\ensuremath{\beta}\ensuremath{\sim}1.53$ which characteristic value other $\ensuremath{\beta}\ensuremath{\sim}1.33$ deformation,