Počet záznamů: 1
Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective
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SYSNO ASEP 0475654 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective Tvůrce(i) Dreyfuss, A. C. (US)
Launey, K. D. (US)
Dytrych, Tomáš (UJF-V) ORCID, SAI
Draayer, J. P. (US)
Baker, R. B. (US)
Deibel, C. M. (US)
Bahri, C. (US)Celkový počet autorů 7 Číslo článku 044312 Zdroj.dok. Physical Review C. - : American Physical Society - ISSN 2469-9985
Roč. 95, č. 4 (2017)Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova C-12 ; no-core shell-model ; resonance Vědní obor RIV BE - Teoretická fyzika Obor OECD Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) CEP GA16-16772S GA ČR - Grantová agentura ČR Institucionální podpora UJF-V - RVO:61389005 UT WOS 000399938800003 EID SCOPUS 85017288769 DOI 10.1103/PhysRevC.95.044312 Anotace We present a detailed discussion of the structure of the low-lying positive-parity energy spectrum of C-12 from a no-core shell-model perspective. The approach utilizes a fraction of the usual shell-model space and extends its multishell reach via the symmetry-based no-core symplectic shell model (NCSpM) with a simple, physically informed effective interaction. We focus on the ground-state rotational band, the Hoyle state, and its 2(+) and 4(+) excitations, as well as the giant monopole 0(+) resonance, which is a vibrational breathing mode of the ground state. This, in turn, allows us to address the open question about the structure of the Hoyle state and its rotational band. In particular, we find that the Hoyle state is best described through deformed prolate collective modes rather than vibrational modes, while we show that the higher lying giant monopole 0(+) resonance resembles the oblate deformation of the C-12 ground state. In addition, we identify the giant monopole 0(+) and quadrupole 2(+) resonances of selected light-and intermediate-mass nuclei, along with other observables of C-12, including matter rms radii, electric quadrupole moments, and E2 and E0 transition rates. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2018
Počet záznamů: 1