Effects of rotation and valence nucleons in molecular α-chain nuclei

Scientific paper - Original scientific paper

• Author: D. D. Zhang
• Author: Z. X. Ren
• Author: P. W. Zhao
• Author: D. Vretenar
• Author: T. Nikšić
• Author: J. Meng
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

Effects of rotation and valence nucleons in molecular linear α- chain nuclei are analyzed using a threedimensional lattice cranking model based on covariant density functional theory. The structure of the mirror nuclei ^16C and ^16Ne is investigated as a function of rotational frequency. The valence nucleons, with respect to the 3α linear chain core of ^12C, at low frequency occupy the π molecular orbital. With increasing rotational frequency these nucleons transition from the π orbital to the σ molecular orbital, thus stabilizing the 3α linear chain structure. It is predicted that the valence protons in 16Ne change occupation from the π to the σ molecular orbital at ħω ≈ 1.3 MeV, a lower rotational frequency compared to ħω ≈ 1.7 MeV for the valence neutrons in 16C. The same effects of valence protons are found in ^20Mg, compared to the four valence neutrons in ^20O. The model is also used to examine the effect of alignment of valence nucleons on the relative positions and size of the three α clusters in the mirror nuclei ^16C and ^16Ne.

• Keywords (english): molecular linear α-chain nuclei
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review C
• Numbering: vol. 105, no. 2, 024322
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.105.024322
• URN:NBN: urn:nbn:hr:217:557475
• Publication: 2022
• Project: Number: KK.01.1.1.01.0004; Title (english): QuantiXLie Center of Excellence; Acronym: QuantiXLie; Leader: Hrvoje Buljan, Pavle Pandžić; Jurisdiction: eu; Funding stream: European Regional Development Fund - the Competitiveness and Cohesion Operational Programme
• Document URL: https://link.aps.org/doi/10.1103/PhysRevC.105.024322
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2022 American Physical Society; Received 25 November 2021; Accepted 9 February 2022; Published 22 February 2022.
• Created on: 2023-09-13 20:14:20