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Spectroscopy of (39.41)Si and the border of the N=28 island of inversion
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SYSNO ASEP 0367068 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Spectroscopy of (39.41)Si and the border of the N=28 island of inversion Author(s) Sohler, D. (HU)
Grévy, S. (FR)
Dombrádi, Zs. (HU)
Baiborodin, Dmitri (UJF-V)
Dlouhý, Zdeněk (UJF-V)
Mrázek, Jaromír (UJF-V) RID, ORCID, SAINumber of authors 41 Source Title Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 703, č. 4 (2011), s. 417-421Number of pages 5 s. Language eng - English Country NL - Netherlands Keywords Nuclear structure ; Knockout reactions ; Shell closures Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders R&D Projects GAP203/10/0310 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000295500400005 DOI 10.1016/j.physletb.2011.08.004 Annotation The structure of the very neutron-rich nuclei (39)Si and (41)Si has been investigated via in-beam gamma-ray spectroscopy and few-nucleon knockout from radioactive beams. The observation of low-lying states in (39)Si is a clear evidence for a drastic lowering of the intruder neutron 3/2(-) state when going from Z = 20 to Z = 14. The energy of the only gamma-ray transition (672(14) keV) observed in (41)Si is significantly lower than that of the first excited state in (47)Ca (2014 keV) suggesting a deformed ground state for (41)Si. These results are consistent with large-scale shell-model calculations implying that strong proton-neutron correlations are the main reason for the lowering of the intruder configurations over the normal ones. (C) 2011 Elsevier By. All rights reserved. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2012
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