论文标题
$^{239} $ u的细分配置从裂变片段的收益率和动力学信息
Scission configuration of $^{239}$U from yields and kinetic information of fission fragments
论文作者
论文摘要
同位素裂变的产量和裂变速度的同时测量$^{239} $首次进行。 $^{239} $ u裂变系统是在$^{238} $ u beam之间在5.88 meV/nucleon和$^{9} $的目标中产生的。在低能量下的逆运动学和在Ganil设施上使用VAMOS ++光谱仪的组合允许在裂变系统的参考框架中的全裂变差异分布及其速度的同位素鉴定。片段时片段的质子和中子含量，它们的总动力学和总激发能以及中子多样性。从这些可观察到的信息及其之间的相关性获得了来自分离点配置的信息。讨论了八杆基形成的质子和中子壳在裂变裂变产生中的作用。
The simultaneous measurement of the isotopic fission-fragment yields and fission-fragment velocities of $^{239}$U has been performed for the first time. The $^{239}$U fissioning system was produced in one-neutron transfer reactions between a $^{238}$U beam at 5.88 MeV/nucleon and a $^{9}$Be target. The combination of inverse kinematics at low energy and the use of the VAMOS++ spectrometer at the GANIL facility allows the isotopic identification of the full fission-fragment distribution and their velocity in the reference frame of the fissioning system. The proton and neutron content of the fragments at scission, their total kinetic and total excitation energy, as well as the neutron multiplicity were determined. Information from the scission point configuration is obtained from these observables and the correlation between them. The role of the octupole-deformed proton and neutron shells in the fission-fragment production is discussed.
