arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.01207nucl-th
收藏

~(11)Be的结构和反应:单中子晕的多体基础

Structure and reactions of 11Be: many-body basis for single-neutron halo

F. Barranco, G. Potel, R. A. Broglia, E. Vigezzi

摘要:

奇异核11Be已被广泛研究,并有许多关于该系统结构的实验信息。在经验重整化的核场论的框架内,在组态和三维空间中,通过与集体粒子-空穴(p,h)的耦合和10 Be核的配对振动,以及不仅在明确考虑的粒子和参与集体态的粒子之间起作用的泡利原理,处理束缚态和连续单粒子态的混合,而且在涉及双声子虚态的费米子之间,首次有可能同时和定量地说明1/2+,1/2-低激发态的能量,5/2+共振的质心和线形,~(11)Be作为靶核或剩余核的单核子剥离和拾取绝对微分截面,连接1/2+和1/2-宇称反转能级的偶极跃迁以及电荷半径,从而提供了一个统一的和详尽的表征的多体效应的基础上,这个范例单中子晕系统。

英文摘要:

The exotic nucleus 11Be has been extensively studied and much experimental information is available on the structure of this system. Treating, within the framework of empirically renormalised nuclear field theory in both configuration and 3D-space, the mixing of bound and continuum single-particle states through the coupling to collective particle-hole (p,h) and pairing vibrations of the 10Be core, as well as Pauli principle acting not only between the particles explicitly considered and those participating in the collective states, but also between fermions involved in two-phonon virtual states it is possible, for the first time, to simultaneously and quantitatively account for the energies of the 1/2+,1/2- low-lying states, the centroid and line shape of the 5/2+ resonance, the one-nucleon stripping and pickup absolute differential cross sections involving 11Be as either target or residual nucleus, and the dipole transitions connecting the 1/2+ and 1/2- parity inverted levels as well as the charge radius, thus providing a unified and exhaustive characterisation of the many-body effects which are at the basis of this paradigmatic one-neutron halo system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑