Extended investigation of superdeformed bands in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Tb</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>151</mml:mn><mml:mo>,</mml:mo><mml:mn>152</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>nuclei
Jean‐Marc Robin» ¦8¼ B½ ² ¿¾ À 0³ ¡Á h¦ ¶ j± i à @Ä • AEÅ Ç È È Â m£É ¢Ê Ë DÌ sÍ iÎ É 6•T. ByrskiInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2, FranceG. Duchêne» fÍ Ã &Ï Ë g ÐF.A. Beck» fÍ Ã &Ï Ë g ÐD. Curien² k´² ¤µ s ¶ I•N. Dubray² k´² ¤µ s ¶ I•J. Dudek¶ £i¹ ¦ ¶ jº i¹ ¦ ¶ j±A. GóźdźA. OdaharaNishinippon Institute of Technology, Kanda, Fukuoka 800-03, JapanN. SchunckInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2 (France); Department of Physics, University of Surrey, GU2 7XH Guildford, Surrey (United Kingdom)N. AdimiUSTHB, Institut de Physique, BP32, El Alia, Bab Ezzouar, 16111 Alger, AlgeriaD. E. AppelbeCCLRC, Daresbury Laboratory, Daresbury Warrington WA4 4AD, United KingdomP. BednarczykInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2, FranceA. BraccoDipartimento di Fisica dell' Universit di Milano and INFN, Sezione di Milano, I-20133 Milano, ItalyB. CederwallRoyal Institute of Technology, Alba Nova University Center, S-106 91 Stockholm, SwedenS. CourtinInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2 (France)D. M. CullenOliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United KingdomO. DorvauxNishinippon Institute of TechnologyS. ErtückUniversity of SurreyG. de FranceInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2, FranceB. GallInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2, FranceP. JoshiInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2, FranceS. L. KingOliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United KingdomA. KorichiCampus FranceK. LagergrenRoyal Institute of Technology, Alba Nova University Center, S-106 91 Stockholm, SwedenG. Lo BiancoDipartimento di Fisica dell' Universit di Camerino and INFN, Sezione di Camerino, I-62032 Camerino, ItalyS. Leoni» ¦8¼ B½ ² ¿¾ À 0³ ¡Á h¦ ¶ j± i à @Ä • AEÅ Ç È È Â m£É ¢Ê Ë DÌ sÍ iÎ É 6•А. Лопез-МартенсCampus FranceS. LunardiDipartimento di Fisica dell' Universit di Padova and INFN, Sezione di Padova, I-35131 Padova, ItalyB. MillionDipartimento di Fisica dell' Universit di Milano and INFN, Sezione di Milano, I-20133 Milano, ItalyA. NourredineInstitut National de Physique Nucléaire et de Physique des ParticulesE. PachoudInstitut National de Physique Nucléaire et de Physique des ParticulesE. S. PaulOliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United KingdomC. M. PetracheDipartimento di Fisica dell' Universit di Camerino and INFN, Sezione di Camerino, I-62032 Camerino, ItalyI. PiquerasInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2, FranceN. RedonInstitut de Physique Nuclaire, F-69622 Villeurbanne Cedex, FranceA. SaltarelliDipartimento di Fisica dell' Universit di Camerino and INFN, Sezione di Camerino, I-62032 Camerino, ItalyJ. SimpsonCCLRC, Daresbury Laboratory, Daresbury Warrington WA4 4AD, United KingdomO. StézowskiE u 8g ¶R. Venturelli» ¦8¼ B½ ² ¿¾ À 0³ ¡Á h¦ ¶ j± i à @Ä • AEÅ Ç È È Â m£É ¢Ê Ë DÌ sÍ iÎ É 6•J. P. VivienInstitut de Recherches Subatomiques, UMR 7500, IN2P3-CNRS-ULP, F-67037 Strasbourg Cedex 2, FranceK. ZuberInstitut of Nuclear Physics, PL-31-42 Krakw, Poland
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Annotatsiya
A detailed study of known and new SD bands in Tb isotopes has been performed with the use of the EUROBALL IV \ensuremath{\gamma}-ray array. The high-statistics data set has allowed for the extension of known SD bands at low and high spins by new \ensuremath{\gamma}-ray transitions. These transitions, as it turns out, correspond to the rotational frequencies where the principal superdeformed gaps ($Z=66,N=86$) close giving rise to up- or down-bending mechanisms. This enables to attribute the underlying theoretical configurations with much higher confidence as compared to the previous identifications. Five new SD bands have been discovered, three of them assigned to the $^{152}\mathrm{Tb}$ and the two others to the $^{151}\mathrm{Tb}$ nuclei. Nuclear mean-field calculations have been used to interpret the structure of known SD bands as well as of the new ones in terms of nucleonic configurations.
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