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Träfflista för sökning "WFRF:(Wood D) srt2:(1995-1999)"

Sökning: WFRF:(Wood D) > (1995-1999)

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  • Sun, H., et al. (författare)
  • New Band Structures and an Unpaired Crossing in 78Kr
  • 1999
  • Ingår i: Physical Review C (Nuclear Physics). - 0556-2813. ; 59:2, s. 655-664
  • Tidskriftsartikel (refereegranskat)abstract
    • High-spin states in Kr-78 were studied using the Ni-58(Na-23,3p) reaction at 70 MeV and the Ni-58(Si-23,alpha 4p) reaction at 130 MeV. Prompt gamma-gamma coincidences were measured using the Pitt-FSU detector array and the GAMMASPHERE-MICROBALL array. Results from these experiments have led to 26 new excitation levels, some of which have been grouped into 3 new bands. Spins were assigned based on directional correlations of oriented nuclei. Two of the new negative-parity bands appear to form a signature-partner pair based on a two-quasineutron structure, in contrast to the previously known two-quasiproton negative-parity bands. A forking has been observed at the 24(+) state in the yrast band, which calculations suggest may result from an unpaired crossing. The available evidence suggests oblate shapes in the yrast band coexist with prolate shapes in the negative-parity bands. [S0556-2813(99)04602-6].
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  • Sarantites, D. G., et al. (författare)
  • Triaxial superdeformed bands in [Formula Presented]
  • 1998
  • Ingår i: Physical Review C - Nuclear Physics. - 0556-2813. ; 57:1, s. 1-5
  • Tidskriftsartikel (refereegranskat)abstract
    • Four new superdeformed bands have been found in the nucleus [Formula Presented]. The good agreement between experiment and configuration-dependent shell correction calculations suggests that three of the bands have triaxial superdeformed shapes. Such unique features in mass [Formula Presented] superdeformed bands have been predicted, but not observed experimentally until now. A fourth band in [Formula Presented] is interesting due to a fairly constant and unusually high dynamic moment of inertia. Possible interpretations of this structure are discussed.
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  • Bennewitz, Christer, et al. (författare)
  • Spectral asymptotics for higher-order ordinary differential equations
  • 1997
  • Ingår i: Proceedings of the London Mathematical Society. - 0024-6115. ; 74:3, s. 612-632
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper gives one-term componentwise asymptotics for the M and spectral matrices of a self-adjoint realisation of an even-order ordinary differential expression. The underlying interval is assumed to have at least one regular endpoint, and the boundary conditions are supposed to be separated. Furthermore, the weight function and the reciprocal of the highest-order coefficient are supposed to be of regular variation at the regular endpoint, in the sense of Bingham, Goldie and Teugels.
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