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  • GEOPHYSICS  (2)
  • Surface physics, nanoscale physics, low-dimensional systems  (2)
  • 32.70  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Experimental study of autoionizing states of AuI (1991)
    Springer
    Applied physics 52 (1991), S. 299-304 
    Details
    ISSN: 1432-0649
    Keywords: 32.70 ; 32.80D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper describes the investigation of the autoionizing states of AuI by exciting the states of 6d 2 D 3/2 and 6d D 5/2 with tunable dye lasers by means of a resonance ionization time-of-flight mass spectrometer (RI-TOFMS). Many new autoionizing states were found, a few of which have narrow-linewidths of about 0.1 cm−1. The photoionization efficiencies for different channels were compared. Among the autoionizing states found so far, the highest photoionization yield is given by two newly obtained states from the state 6d 2 D 5/2, 3683.6 cm−1 and 4636.5 cm−1 above the first ionization limit. In addition, the Shore-Fano profile parameters of several autoionizing resonances were determined by a nonlinear fitting program.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00325409
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    Paper (German National Licenses)
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  • 2
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    Plasmon and coupled plasmon-phonon modes in graphene in the presence of a driving electric field (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-05-30
    Description: Author(s): C. X. Zhao, W. Xu, H. M. Dong, and F. M. Peeters We present a theoretical study of the plasmon and coupled plasmon-phonon modes induced by intraband electron-electron interaction in graphene in the presence of driving dc electric field. We find that the electric field dependence of these collective excitation modes in graphene differs significantl... [Phys. Rev. B 89, 195447] Published Thu May 29, 2014
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 3
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    Interplay between lattice dynamics and superconductivity in Nb_{3}Sn thin films (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-07-27
    Description: Author(s): S. Couet, H. Peelaers, M. Trekels, K. Houben, M. Y. Hu, J. Y. Zhao, W. Bi, E. E. Alp, E. Menéndez, B. Partoens, F. M. Peeters, M. J. Van Bael, A. Vantomme, and K. Temst We investigate the link between superconductivity and atomic vibrations in Nb 3 Sn films with a thickness ranging from 10 to 50 nm. The challenge of measuring the phonon density of states (PDOS) of these films has been tackled by employing the technique of nuclear inelastic scattering by 119 Sn isotope... [Phys. Rev. B 88, 045437] Published Fri Jul 26, 2013
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 4
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    Development of diapiric structures in the upper mantle due to phase transitions (1991)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Solid-state phase transition in time-dependent mantle convection can induce diapiric flows in the upper mantle. When a deep mantle plume rises toward phase boundaries in the upper mantle, the changes in the local thermal buoyancy, local heat capacity, and latent heat associated with the phase change at a depth of 670 kilometers tend to pinch off the plume head from the feeding stem and form a diapir. This mechanism may explain episodic hot spot volcanism. The nature of the multiple phase boundaries at the boundary between the upper and lower mantle may control the fate of deep mantle plumes, allowing hot plumes to go through and retarding the tepid ones.
    Keywords: GEOPHYSICS
    Type: Science (ISSN 0036-8075); 252; 1836-183
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Hard turbulent thermal convection and thermal evolution of the mantle (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Hard turbulent convection is investigated using laboratory experiments and numerical simulations. In Newtonian mantle convection, the appearance of disconnected plumes marks the transition from soft to hard turbulence. For non-Newtonian rheology, the transition to hard turbulence takes place at much lower Nusselt numbers than it does for Newtonian rheology. This has important ramifications for the mantle. Large curvatures are developed in the trajectories of non-Newtonian plumes in the hard turbulent regime, in contrast to the trajectories of Newtonian plumes. When phase transitions are considered, mantle convection tends to become more layered with increasing Rayleigh numbers. The manner of mantle convection might have changed with time from a layered to a more whole mantle type of flow. Superplume events could have been caused by catastrophic overturns associated with strong gravitational instabilities in the transition zone.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 98; E3; p. 5355-5373.
    Format: text
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    NASA TECHNICAL REPORTS
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