论文标题
$^{239} $ pu的快速中子引起的裂变的总动能和质量产生
Total kinetic energy and mass yields from the fast neutron-induced fission of $^{239}$Pu
论文作者
论文摘要
裂变中的总动能（TKE）释放是一个重要的观察力，构成了裂变中释放的80％以上的能量（e $ _ {f} $ $ \ $ \ $ \ $ 200 mev）。虽然先前测量了$^{239} $ pu（n，f）中的TKE释放，最高可达50 meV事件中子能量（E $ _ {n} $），但TKE发行中的功能是E $ _ {n} $的最高值。 TKE释放从e $ _ {n} $ = 30到50 meV存在明显的变平，这与明显减少的TKE从e $ _ {n} $ = 0.5到30 meV都不同意。为了验证和阐明这一趋势，进行了较高的E $ _n $值的TKE测量值。我们从e $ _ {n} $ = 2.4至100 meV中介绍了$^{239} $ pu（n，f）中TKE发行版的绝对测量。我们使用硅销检测器来测量碎片能，并使用2E方法来推断质量恢复曲线。我们还讨论了裂变不对称性以及近似裂变碎片质量与失真之间的关系。
The total kinetic energy (TKE) release in fission is an important observable, constituting over 80% of the energy released in fission (E$_{f}$ $\approx$ 200 MeV). While the TKE release in the $^{239}$Pu(n,f) reaction was previously measured up to 50 MeV incident neutron energy (E$_{n}$), there were features in TKE release at the highest values of E$_{n}$ that were puzzling. There was a marked flattening of TKE release from E$_{n}$ = 30 to 50 MeV, in disagreement with the clearly decreasing TKE observed from E$_{n}$ = 0.5 to 30 MeV. To verify and clarify this trend, TKE measurements at higher values of E$_n$ were made. We present absolute measurements of TKE release in $^{239}$Pu(n,f) from E$_{n}$ = 2.4 to 100 MeV. We used silicon PIN detectors to measure the fragment energies and deduce mass-yield curves using the 2E-method. We also discuss fission asymmetry and the relationships between approximate fission fragment mass and distortion.
