arXiv 1111.08022011-11nucl-ex

少核子系统：研究现状与结果

Few-Nucleon Systems: Notes about the Status and Results of Investigations

Yu. P. Lyakhno

摘要：

辐射技术在电力工程、医学、生物学和人类活动的其他领域得到了广泛的应用。然而，核反应的理论计算和相应的实验结果的解释似乎依赖于模型。核反应的模型无关计算必须考虑核的基态结构、末态核子相互作用和介子交换流的贡献。这些计算只能进行适当考虑现实的NN和3N核子之间的力量，也与使用精确的方法来解决多体问题。在这种技术中，从介子产生阈值以下的粒子能量区的少核子系统中进行核反应的研究是有利的。NN相互作用的张量部分和3NF，s产生核子轨道动量不为零的最轻核子态。最轻原子核中的这些状态受核子间力的性质的制约，因此，在所有原子核中应该无一例外地观察到类似的效应。这些评论文章一般都是关于三核子系统的。本文主要研究$^4$ He核。

英文摘要：

Radiation technologies have found wide application in power engineering, medicine, biology and other areas of human activities. However, theoretical calculations of nuclear reactions and, correspondingly, the interpretation of experimental results appear model-dependent. The model-independent calculation of the nuclear reaction must take into account the structure of the nuclear ground state, the final-state nucleon interaction and the contribution of meson exchange currents. These calculations can be carried out only with due regard for realistic NN and 3N forces between nucleons and also, with the use of exact methods of solving the many-body problem. In this technique it is expedient to conduct investigations of nuclear reactions as from few-nucleon systems in the energy area of the particles below the meson-producing threshold. The tensor part of NN interaction and 3NF,s generate the lightest nuclei states with nonzero orbital momenta of nucleons. These states in the lightest nuclei is conditioned the properties of inter-nucleonic forces, and therefore, similar effects should be observed unexceptionally in all nuclei. The review papers are generally devoted to three-nucleon systems. In this paper primary attention is given to the investigation of the $^4$He nucleus.

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