2021年2月23日
Quasifree Neutron Knockout Reaction Reveals a Small s -Orbital Component in the Borromean Nucleus B 17
Physical Review Letters
- 巻
- 126
- 号
- 8
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.126.082501
A kinematically complete quasifree (p,pn) experiment in inverse kinematics was performed to study the structure of the Borromean nucleus B17, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for 1s1/2 and 0d5/2 orbitals, and a surprisingly small percentage of 9(2)% was determined for 1s1/2. Our finding of such a small 1s1/2 component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in B17. The present work gives the smallest s- or p-orbital component among known nuclei exhibiting halo features and implies that the dominant occupation of s or p orbitals is not a prerequisite for the occurrence of a neutron halo.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevLett.126.082501
- ISSN : 0031-9007
- eISSN : 1079-7114
- PubMed ID : 33709737
- SCOPUS ID : 85102399369