论文标题
246fm的自发裂变
Spontaneous fission of 246Fm
论文作者
论文摘要
对$^{246} $ FM自发裂变的研究的实验是使用木板分离器进行的。同位素是在$^{40} $ ar梁离子和$^{208} $ pb靶核的完整融合反应中合成的。使用SFINX探测器系统获得了$^{246} $ FM自发裂变（$ \ overlineN = 3.79 \ pm0.30 $，$σ^{2}_ν= 2.1 $）的中子产量。使用Tikhonov统计正则化方法（$ \overlineNν_{r} = 3.79 \ pm0.20 $，$σ^{2} _ {νr} = 2.8 $）。自发裂变分支比（$ b_ {sf} = 0.061 \ pm0.005 $）和半寿命（$ t_ {1/2} = 1.50^{+0.08} _ { - 0.07} $ s）的同位素的同位素。将实验数据与Scission点模型预测进行了比较。在每个自发裂变过程的平均中子数量中观察到了极好的收敛。但是，实验和模型促使中子多样性分布的形式差异很大。
An experiment on the study of the $^{246}$Fm spontaneous fission was conducted using the SHELS separator. The isotope was synthesized in the complete fusion reaction of $^{40}$Ar beam ions and $^{208}$Pb target nuclei. The neutron yields of $^{246}$Fm spontaneous fission ($\overlineν = 3.79\pm0.30$, $σ^{2}_ν = 2.1$) were obtained using the SFiNx detector system. The multiplicity distribution of emitted prompt neutrons was restored using the Tikhonov method of statistical regularisation ($\overlineν_{r} = 3.79\pm0.20$, $σ^{2}_{νr} = 2.8$). The spontaneous fission branching ratio ($b_{SF} = 0.061\pm0.005$) and the half-life ($T_{1/2} = 1.50^{+0.08}_{-0.07}$ s) of the isotope were determined. The experimental data were compared with scission point model predictions. Excellent convergence was observed in the average number of neutrons per spontaneous fission process. However, the forms of the experimental and model prompt neutron multiplicity distributions differ significantly.
