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Quadrupole moment of superdeformed bands in 151Tb (1998)

Finck, C. ; Stézowski, O. ; Beck, F.A. ; [weitere]

Springer

The European physical journal 2 (1998), S. 123-127

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ISSN: 1434-601X

Schlagwort(e): PACS:21.10.Ky Electromagnetic moments – 21.10.Tg Lifetimes – 21.10.Re Collective levels

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: The quadrupole moments of the first two superdeformed (SD) bands in the nucleus 151Tb have been measured with the Doppler Shift Attenuation Method (DSAM) using the EUROGAM γ-ray spectrometer. The first excited band (B2) is identical to the yrast SD band of 152Dy in terms of dynamical moments of inertia and γ-ray energies. The measured relative quadrupole moments of the yrast band (B1) with respect to the band B2 are nicely reproduced by self-consitent Hartree-Fock calculations. The variation of the Q 0 value at the bottom of the yrast band suggests a large admixture between wave functions in the normal and the SD wells. This could explain the rather high deexcitation spin for the yrast band.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100500050100

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Inclusive excitation-energy distributions of hot nuclei from 44 MeV/nucleon Ar- and 32 MeV/nucleon Kr-induced reactions (1993)

Lott, B. ; Charvet, J. L. ; Crema, E. ; [weitere]

Springer

The European physical journal 346 (1993), S. 201-208

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ISSN: 1434-601X

Schlagwort(e): 25.70.Gh ; 25.70.Lm

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Inclusive neutron multiplicity distributions were measured by means of 4π liquid-scintillator detectors for Ar and Kr-induced reactions at 44 MeV/nucleon and 32 MeV/nucleon, respectively. For all the systems studied, the observed distributions exhibit a bump structure at large multiplicity, corresponding to highly dissipative collisions. For Ar-induced reactions, the excitation energies necessary to explain the most probable neutron multiplicity associated with these dissipative collisions are estimated, the correspondence between excitation energy and neutron multiplicity being calculated in the framework of the statistical model. The so-obtained values of excitation energies, which are systematically lower than those predicted using the massive-transfer picture, are discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01306080

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High-spin states in neutron-rich Dy isotopes populated in deep-inelastic reactions (2001)

Liang, X. ; Chapman, R. ; Spohr, K.-M. ; [weitere]

Springer

The European physical journal 10 (2001), S. 41-47

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ISSN: 1434-601X

Schlagwort(e): PACS. 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ?A? 189

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: High-spin states in neutron-rich Dy isotopes, populated in deep-inelastic processes produced by the interaction of 234 MeV 37Cl ions with a 160Gd target, have been studied using the highly sensitive EUROBALL IV gamma-ray detector array. The previously known level schemes for 159,160,161,162Dy have been extended to significantly higher spin ( ? 30?) and the i 13/2 band crossing in 159Dy has been observed for the first time. The experimental results are discussed within the framework of cranked shell model and projected shell model calculations with particular reference to the observed delayed band crossing in 162Dy.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100500170142

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