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Interplay between single-particle and collective effects in the odd-A Cu isotopes beyond N=40

Stefanescu, I (author)
Georgiev, G (author)
Balabanski, D L (author)
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Blasi, N (author)
Blazhev, A (author)
Bree, N (author)
Cederkäll, Joakim (author)
Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
Cocolios, T E (author)
Davinson, T (author)
Diriken, J (author)
Eberth, J (author)
Ekström, Andreas (author)
Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
Fedorov, D (author)
Fedosseev, V N (author)
Fraile, L M (author)
Franchoo, S (author)
Gladnishki, K (author)
Huyse, M (author)
Ivanov, O (author)
Ivanov, V (author)
Iwanicki, J (author)
Jolie, J (author)
Konstantinopoulos, T (author)
Kroell, Th (author)
Kruecken, R (author)
Koester, U (author)
Lagoyannis, A (author)
Lo Bianco, G (author)
Maierbeck, P (author)
Marsh, B A (author)
Napiorkowski, P (author)
Patronis, N (author)
Pauwels, D (author)
Rainovski, G (author)
Reiter, P (author)
Riisager, K (author)
Seliverstov, M (author)
Sletten, G (author)
Van de Walle, J (author)
Van Duppen, P (author)
Voulot, D (author)
Warr, N (author)
Wenander, F (author)
Wrzosek, K (author)
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 (creator_code:org_t)
2008
2008
English.
In: Physical Review Letters. - 1079-7114. ; 100:11
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Collective properties of the low-lying levels in the odd-A Cu67-73 were investigated by Coulomb excitation with radioactive beams. The beams were produced at ISOLDE and postaccelerated by REX-ISOLDE up to 2.99 MeV/u. In Cu-67,Cu-69, low-lying 1/2(-), 5/2(-), and 7/2(-) states were populated. In Cu-71,Cu-73, besides the known transitions deexciting the single-particle-like 5/2(-) and core-coupled 7/2(-) levels, gamma rays of 454 and 135 keV, respectively, were observed for the first time. Based on a reanalysis of beta-decay work and comparison with the systematics, a spin 1/2(-) is suggested for these excited states. Three B(E2) values were determined in each of the four isotopes. The results indicate a significant change in the structure of the odd-A Cu isotopes beyond N=40 where single-particle-like and collective levels are suggested to coexist at very low excitation energies.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

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art (subject category)
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