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Low-lying isomeric levels in Cu-75
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SYSNO ASEP 0356682 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Low-lying isomeric levels in Cu-75 Author(s) Daugas, J. M. (FR)
Faul, T. (FR)
Grawe, H. (DE)
Pfützner, M. (PL)
Grzywacz, R. (US)
Lewitowicz, M. (FR)
Achouri, N. L. (FR)
Angelique, J. C. (FR)
Baiborodin, Dmitri (UJF-V)
Bentida, R. (FR)
Béraud, R. (FR)
Borcea, C. (RO)
Bingham, C. R. (US)
Catford, W. (GB)
Emsallem, A. (FR)
de France, G. (FR)
Grzywacz, K.L. (US)
Lemmon, R. C. (GB)
Jimenez, M.J.L. (FR)
de Oliveira Santos, F. (FR)
Regan, P. H. (GB)
Rykaczewski, K. (US)
Sauvestre, J. E. (FR)
Sawicka, M. (PL)
Stanoiu, M. (FR)
Sieja, K. (DE)
Nowacki, F. (FR)Source Title Physical Review. C - ISSN 0556-2813
Roč. 81, č. 3 (2010), 034304/1-034304/6Number of pages 6 s. Language eng - English Country US - United States Keywords MU-S-ISOMERS ; NI-78 ; ISOTOPES Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000276769400020 DOI 10.1103/PhysRevC.81.034304 Annotation Isomeric low-lying states were identified and investigated in the Cu-75 nucleus. Two states at 61.8(5)- and 128.3(7)-keV excitation energies with half-lives of 370(40)- and 170(15)-ns were assigned as Cu-75m1 and Cu-75m2, respectively. The measured half-lives combined with the recent spin assignment of the ground state allow one to deduce tentatively spin and parity of the two isomers and the dominant multipolarities of the isomeric transitions with respect to the systematics of the Cu isotopes. Shell-model calculations using an up-to-date effective interaction reproduce the evolution of the 1/2(-), 3/2(-), and 5/2(-) states for the neutron-rich odd-mass Cu isotopes when filling the nu g(9/2). The results indicate a significant change in the nuclear structure in this region, where a single-particle 5/2(-) state coexists with more and more collective 3/2(-) and 1/2(-) levels at low excitation energies. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
Number of the records: 1