论文标题
增强了富含中子氧核在烈性能量的富含中子氧核的动力学
Enhanced dynamics in fusion of neutron-rich oxygen nuclei at above-barrier energies
论文作者
论文摘要
提出了在$^{12} $ c靶标上A = 16-19的同位素同位素的同位素链中的上层融合横截面。将实验数据与静态和动力学微观计算进行比较。这些计算无法解释$ \ sim $ 37 \％\％的平均熔点融合横截面的增加，而$^{19} $ O的平均融合截面与$β$稳定的氧同位素相比。该结果表明，对于富含中子的核，现有的时间依赖性的Hartree-fock计算低估了动力学在近级级式能量中的作用。对于越来越多的中子核的同位素链的高质量测量，可探测该融合动力学的同位素链提供了一种有效的手段。
Above-barrier fusion cross-sections for an isotopic chain of oxygen isotopes with A=16-19 incident on a $^{12}$C target are presented. Experimental data are compared with both static and dynamical microscopic calculations. These calculations are unable to explain the $\sim$37\% increase in the average above-barrier fusion cross-section observed for $^{19}$O as compared to $β$-stable oxygen isotopes. This result suggests that for neutron-rich nuclei existing time-dependent Hartree-Fock calculations underpredict the role of dynamics at near-barrier energies. High-quality measurement of above-barrier fusion for an isotopic chain of increasingly neutron-rich nuclei provides an effective means to probe this fusion dynamics.
