论文标题
厚目标杜特隆分手的次级中子产生
Secondary Neutron Production from Thick Target Deuteron Breakup
论文作者
论文摘要
厚目标Deuteron分解是一种基于可变的能量加速器的高能中子来源，并在基本和应用的核科学和工程中应用。但是，分手机制仍然很熟悉，并且厚目标分解的中子产量数据相对较少。在这项工作中，使用飞行时间和激活技术，在$ε_d= 33 $和40 MEV的厚铍目标上测量了Deuteron分裂的双分数中子屈服。我们还为双分化Deuteron分手横截面引入了一个简单的混合模型，适用于$ε_d= 10 $ - $ 100 $ - $ 100 $ MEV Energy系列（$ Z \ leq 6 $）目标。该模型具有四个经验参数，这些参数适合使用最小二乘方法在铍靶标上重现实验分解测量。结果表明，这些参数可以很好地推断出更高的能量，并向其他低Z目标材料推断出来。我们还包括优化对化合物和平衡反应修改Kalbach Systematics的参数，以便更好地以大角度重现铍靶标的实验数据。
Thick target deuteron breakup is a variable-energy accelerator-based source of high-energy neutrons, with applications in fundamental and applied nuclear science and engineering. However, the breakup mechanism remains poorly understood, and data on neutron yields from thick target breakup remains relatively scarce. In this work, the double-differential neutron yields from deuteron breakup have been measured on a thick beryllium target at $ε_d=33$ and 40 MeV, using both time-of-flight and activation techniques. We have also introduced a simple hybrid model for the double-differential deuteron breakup cross section, applicable in the $ε_d=10$--$100$ MeV energy range on light ($Z\leq 6$) targets. This model features four empirical parameters that have been fit to reproduce experimental breakup measurements on beryllium targets, using the method of least-squares. It was shown that these parameters extrapolate well to higher energies, and to other low-Z target materials. We also include optimization of the parameters that modify the Kalbach systematics for compound and pre-equilibrium reactions, in order to better reproduce the experimental data for beryllium targets at large angles.
