论文标题
自轭$^{108} $ xe和$^{104} $ te $α$ -decay链的显微镜描述
Microscopic description of the self-conjugate $^{108}$Xe and $^{104}$Te $α$-decay chain
论文作者
论文摘要
A microscopic calculation of half-lives for the recently observed $^{108}$Xe $\to$ $^{104}$Te $\to$ $^{100}$Sn $α$-decay chain is performed using a self-consistent framework based on energy density functionals.相对论密度功能DD-PC1和有限范围的可分离配对相互作用用于计算$^{104} $ TE的轴向对称性变形能和$^{108} $ XE作为四倍体，八核，八核，六核心集体均值的函数。确定动态最小化路径的确定，该路径从平衡变形到Scission点的$α$粒子发射。与$^{108} $ XE的$^{104} $ te的197 ns：197 ns，与$^{108} $ Xe的50 $ $ s相比，与$^{104} $^{104} $ te的$α$ -decay的最新实验值进行了比较。 $μ$ s。
A microscopic calculation of half-lives for the recently observed $^{108}$Xe $\to$ $^{104}$Te $\to$ $^{100}$Sn $α$-decay chain is performed using a self-consistent framework based on energy density functionals. The relativistic density functional DD-PC1 and a separable pairing interaction of finite range are used to compute axially-symmetric deformation energy surfaces of $^{104}$Te and $^{108}$Xe as functions of quadrupole, octupole and hexadecupole collective coordinates. Dynamic least-action paths are determined that trace the $α$-particle emission from the equilibrium deformation to the point of scission. The calculated half-lives: 197 ns for $^{104}$Te and 50 $μ$s for $^{108}$Xe, are compared to recent experimental values of the half-lives of superallowed $α$-decay of $^{104}$Te: $< 18$ ns, and $^{108}$Xe: 58$^{+106}_{-23}$ $μ$s.
