论文标题
1-200 MEV的中子诱导的核裂变中碎片的角分布：数据，理论模型和相关问题
Angular distribution of fragments in neutron-induced nuclear fission at energies 1-200 MeV: data, theoretical models and relevant problems
论文作者
论文摘要
近年来，对中子诱导的核裂变中碎片的角度分布的研究已扩展到中间能量，最高为200 meV，以及广泛的目标同位素。以示例为例，我们组获得了反应237-NP（N，F）的最新数据，我们讨论了裂变片段角分布的特定特征，并根据代码TALYS提供了一种模拟方法。结果表明，一个简化的模型合理地描述了整个范围1-200 MEV中角分布的能量依赖性。讨论改进模型的方法以及使用它来获取有关中子核相互作用中裂变和平衡过程的新信息的可能性。我们还考虑了描述裂变片段分布的相关问题。
In recent years, investigations of angular distributions of fragments in neutron-induced nuclear fission have been extended to intermediate energies, up to 200 MeV, as well as to a wide range of target isotopes. Using as an example the latest data obtained by our group for the reaction 237-Np(n,f), we discuss the specific features of fission fragment angular distribution and present a method for their simulation based on the code TALYS. It is shown that a simplified model reasonably describes energy dependence of the angular distribution in the whole range 1-200 MeV. The ways to improve the model are discussed along with the possibilities to use it for obtaining new information on fission and pre-equilibrium processes in neutron-nucleus interaction. We consider also the relevant problems of describing fission fragment angular distributions.
