| 1. |
- Andreoiu, Corina, et al.
(författare)
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Doorway States in the Gamma Decay-out of the Yrast Superdeformed Band in 59Cu
- 2003
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Ingår i: Physical Review Letters. - 1079-7114. ; 91:23
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Tidskriftsartikel (refereegranskat)abstract
- The decay-out process of the yrast superdeformed band in Cu-59 has been investigated. The firm determination of spin, parity, excitation energy, and configuration of the states involved in this process constitutes a unique situation for a detailed understanding of the decay-out mechanism. A theoretical model is introduced that includes a residual interaction and tunneling matrix element between bands, calculated in the configuration-dependent cranked Nilsson-Strutinsky model. This interaction causes the decay to occur via a small number of observed doorway states.
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| 2. |
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| 3. |
- Andreoiu, Corina, et al.
(författare)
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Competing Decay-out Mechanisms of the Yrast Superdeformed Band in 59Cu
- 2004
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Ingår i: AIP Conference Proceedings. - : AIP. - 1551-7616 .- 0094-243X. ; 701, s. 289-294
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Konferensbidrag (refereegranskat)abstract
- This contribution reports on the decay-out of the yrast superdeformed band in 59Cu. It decays by multiple γ-ray transitions into low-spin spherical states in the first minimum of the nuclear potential in 59Cu, and, in competition, by emitting two prompt protons into a spherical state in 58Ni. For the first time in A ~ 60, the role of doorway states in the course of the decay-out is discussed
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| 4. |
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| 5. |
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| 6. |
- Leoni, S, et al.
(författare)
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Four independent decay properties in the super-deformed well of Eu-143
- 1997
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Ingår i: PHYSICS LETTERS B. - : ELSEVIER SCIENCE BV. - 0370-2693. ; 409:1-4, s. 71-76
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The flow of gamma-transitions through the superdeformed minimum of Eu-143 is investigated by studying the intensities of four different types of gamma-rays of superdeformed origin, obtained with a variety of gating conditions. They can all be explained ra
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| 7. |
- Leoni, S, et al.
(författare)
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Observation of an intense quasicontinuum of superdeformed rotational transitions in Eu-143
- 1996
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Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 76:18, s. 3281-3284
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Quasicontinuum spectra in coincidence with transitions belonging to the different potential wells of Eu-143, studied with increasing number of coincidence folds. An intense bump of rotationally correlated transitions is observed to develop in the high spi
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| 8. |
- Ragnarsson, Ingemar, et al.
(författare)
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Complete Spectroscopy in High-spin Cranking Calculations
- 2004
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Ingår i: European Physical Journal A. Hadrons and Nuclei. - : Springer Science and Business Media LLC. - 1434-6001. ; 20:1, s. 35-36
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Tidskriftsartikel (refereegranskat)abstract
- Exact and approximate quantum numbers of the cranked Nilsson-Strutinsky (CNS) formalism are exploited to calculate excited bands in fixed configurations with the energy of the individual bands minimized with respect to deformation for all spin values. The formalism is applied to Cu-59, where all bands which appear important in the decay out of the superdeformed band are calculated.
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| 9. |
- Ragnarsson, Ingemar, et al.
(författare)
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Excited Bands in Fixed CNS Configurations
- 2003
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Ingår i: AIP Conference Proceedings. - : AIP. - 1551-7616 .- 0094-243X. ; 656, s. 205-210
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Konferensbidrag (refereegranskat)abstract
- Exact and approximate quantum numbers of the cranked Nilsson-Strutinsky (CNS) formalism are exploited to calculate excited bands in fixed configurations with the energy of the individual bands minimized with respect to deformation for all spin values. The formalism is illustrated to calculate all bands which appear important in the decay out of the superdeformed band in 59Cu
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| 10. |
- Uhrenholt, Henrik, et al.
(författare)
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Combinatorial nuclear level-density model
- 2013
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Ingår i: Nuclear Physics, Section A. - : Elsevier BV. - 0375-9474. ; 913, s. 127-156
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Tidskriftsartikel (refereegranskat)abstract
- A microscopic nuclear level-density model is presented. The model is a completely combinatorial (micro-canonical) model based on the folded-Yukawa single-particle potential and includes explicit treatment of pairing, rotational and vibrational states. The microscopic character of all states enables extraction of level-distribution functions with respect to pairing gaps, parity and angular momentum. The results of the model are compared to available experimental data: level spacings at neutron separation energy, data on total level-density functions from the Oslo method, cumulative level densities from low-lying discrete states, and data on parity ratios. Spherical and deformed nuclei follow basically different coupling schemes, and we focus on deformed nuclei. (c) 2013 Elsevier B.V. All rights reserved.
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| 11. |
- Åberg, Sven, et al.
(författare)
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Chaos in the Nucleus: SD Decay-out and Masses
- 2004
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Ingår i: AIP Conference Proceedings. - : AIP. - 0094-243X .- 1551-7616. ; 701, s. 213-221
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Konferensbidrag (refereegranskat)abstract
- Some consequences of chaos in the nucleus are discussed. The decay-out from superdeformed band occurs in a region where normal-deformed states may be chaotic, and it is shown how the distribution of decay-out matrix elements may reveal the degree of chaos. The decay-out is mediated by doorway states that are not resolved in the A=190 region, but experimentally seen in 59Cu. A model for the decay-out in the A=60 region is set up and applied to 59Cu. It is discussed how errors in nuclear mass formula may be related to chaotic motion, and a theoretical model is set up and applied to chaotic masses.
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