Search Results - (Author, Cooperation:B. G. Wilson)
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1Latest Papers from Table of Contents or Articles in PressJ. E. Bailey ; T. Nagayama ; G. P. Loisel ; G. A. Rochau ; C. Blancard ; J. Colgan ; P. Cosse ; G. Faussurier ; C. J. Fontes ; F. Gilleron ; I. Golovkin ; S. B. Hansen ; C. A. Iglesias ; D. P. Kilcrease ; J. J. MacFarlane ; R. C. Mancini ; S. N. Nahar ; C. Orban ; J. C. Pain ; A. K. Pradhan ; M. Sherrill ; B. G. Wilson
Nature Publishing Group (NPG)
Published 2015Staff ViewPublication Date: 2015-01-06Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Articles: DFG German National LicensesWeber, S. V. ; Remington, B. A. ; Haan, S. W. ; Wilson, B. G. ; Nash, J. K.
[S.l.] : American Institute of Physics (AIP)
Published 1994Staff ViewISSN: 1089-7674Source: AIP Digital ArchiveTopics: PhysicsNotes: The growth due to the Rayleigh–Taylor (RT) instability of single-wavelength surface perturbations on planar foils of brominated CH [CH(Br)] and fluorosilicone (FS) was measured. The foils were accelerated by x-ray ablation with temporally shaped drive pulses. A range of initial amplitudes (a0) and wavelengths (λ) have been used. This paper focuses upon foils with small a0/λ, which exhibit substantial growth in the linear regime, and are most sensitive to the calculated growth rate. The CH(Br) foils exhibit slower RT perturbation growth because opacity differences result in a larger ablation velocity and a longer density scale length than for FS. Tabulated opacities from detailed atomic models, OPAL [Astrophys. J. 397, 717 (1992)] and super transition array (STA) [Phys. Rev. A 40, 3183 (1989)] were employed. Unlike previous simulations which employed the average atom (XSN) opacity treatment, parameter adjustments to fit experimental data no longer appear necessary. Nonlocal thermodynamic equilibrium (NLTE) effects do not appear to be important. Other variables which may affect the modeling, such as changes of the equation of state and radiation drive spectrum, were also examined. The current calculational model, which incorporates physically justified choices for these calculational ingredients, agrees with the Nova single wavelength RT perturbation growth data.Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesRemington, B. A. ; Weber, S. V. ; Haan, S. W. ; Kilkenny, J. D. ; Glendinning, S. G. ; Wallace, R. J. ; Goldstein, W. H. ; Wilson, B. G. ; Nash, J. K.
New York, NY : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7666Source: AIP Digital ArchiveTopics: PhysicsNotes: An extensive series of experiments has been conducted on the Nova laser to measure hydrodynamic instabilities in planar foils accelerated by x-ray ablation. Single-mode experiments allow a measurement of the fundamental growth rates from the linear well into the nonlinear regime. Two-mode foils give a first direct observation of mode coupling. Surface-finish experiments allow a measurement of the evolution of a broad spectrum of random initial modes.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] An understanding of the mechanism producing the variation has increased in the past few years with the discovery of the solar wind, the development of a model of the large-scale magnetic field configuration in the inner solar system, and the use of computers to achieve detailed information about ...Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1572-9605Keywords: Theory of superconductivity ; high-temperature superconductivity ; superlattice of lattice distortionsSource: Springer Online Journal Archives 1860-2000Topics: Electrical Engineering, Measurement and Control TechnologyPhysicsNotes: Abstract Superconductivity is generally explained by an electron-lattice interaction which results in the pairing of electrons and the condensation of these pairs into a state of lower entropy. In high-temperature superconductivity the pairs consist of hybrids in which the top of the oxygen band of the crowded perovskite layer is mixed with the bottom of unoccupiedd- orf-bands from monoxide layers in the crystal. Only electrons and phonons with low quasi-momentum (k) values participate. This makes it possible to localize the lattice perturbation into broad regions in which the van der Waals forces are reduced and the perovskite planes are contracted. The low entropy state associated with superconductivity manifests itself as the formation of a superlattice of lattice distortions which is in actual motion in the current-carrying states. The observability of this superlattice is discussed.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Intensity enhancements at the surface of the Earth are comparatively rare, only eleven cases having been observed. However, these cosmic ray flare events appear to have certain well-defined properties in common. These include correlation in time with a visible or inferred solar flare, a steep ...Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] Fig. 1. Distribution of count rate in galactic coordinates (energy range 0-2-12-5 keV). Solid dark curves are the boundaries of the total area scanned.Unshaded region within the scanned area has either negligible scan time or the count rate attributed to detector background. Experimental horizon is ...Type of Medium: Electronic ResourceURL: