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Eigenmode dispersion relations in radially inhomogeneous helicon plasmas
Posted on June 5th, 2009 No commentsSuwon Cho<br/> The eigenmode dispersion relation is studied for a helicon plasma whose density varies in the radial direction. It is found that eigenmodes are strongly excited in a weakly collisional plasma when the dispersion relation obtained neglecting electron inertia is approximately satisfied and their order … [Phys. Plasmas 16, 063504 (2009)] published Fri Jun 5, 2009.
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Experimental study of impurity screening in the edge ergodic layer of the Large Helical Device using carbon emissions of CIII to CVI
Posted on June 5th, 2009 No commentsMalay Bikas Chowdhuri, Shigeru Morita, Masahiro Kobayashi, Motoshi Goto, Hangyu Zhou et al.<br/> Four resonance transitions of CIII (977.03 A:2s S-2s2p P), CIV (1550 A:2s S-2p P), CV (40.27 A:1s S-1s2p P), and CVI (33.73 A:1s S-2p P) have been observed in vacuum ultraviolet and extreme ultraviolet regions to study the edge carbon impurity transport in the Large Helical Device ergodic layer. … [Phys. Plasmas 16, 062502 (2009)] published Fri Jun 5, 2009.
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Phenomena associated with complex (dusty) plasmas in the ionosphere during high-speed meteor showers
Posted on June 5th, 2009 No commentsS. I. Kopnin, S. I. Popel, and M. Y. Yu<br/> Formation of dusty plasmas in the Earth’s ionosphere at 80120 km altitudes during high-speed meteor showers and its detectable manifestations are discussed. Emphasis is given to ground-based observations such as detection of low-frequency (<50 Hz) ionospheric radio noise, ground-based observations … [Phys. Plasmas 16, 063705 (2009)] published Fri Jun 5, 2009.
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Oblique modulation of ion-acoustic waves and envelope solitons in electron-positron-ion plasma
Posted on June 5th, 2009 No commentsNusrat Jehan, M. Salahuddin, and Arshad M. Mirza<br/> The effect of oblique modulation on the amplitude dynamics of ion-acoustic wave mechanics propagating in a collisionless electron-positron-ion plasma is investigated. Using KrylovBogoliubovMitropolsky (KBM) perturbation method, a nonlinear Schrodinger (NLS) equation is derived which governs the evolution of o … [Phys. Plasmas 16, 062305 (2009)] published Fri Jun 5, 2009.
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Modeling of the dielectric relaxation in eukaryotic cells
Posted on June 5th, 2009 No commentsP. Salou, A. Mejdoubi, and C. Brosseau<br/> There are two major objectives to the present work. The first objective is to study the influence of the frequency of the oscillating electrical field and membrane conductivity on the dielectric relaxation (beta-dispersion resulting from the buildup of charge at cell membranes due to the MaxwellWagn … [J. Appl. Phys. 105, 114702 (2009)] published Fri Jun 5, 2009.
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High-field electron transport of wide quantum wells under in-plane magnetic fields
Posted on June 5th, 2009 No commentsX. G. Guo and J. C. Cao<br/> High-field transport properties of a bilayer two-dimensional electron gas in a wide quantum well (QW) subjected to an in-plane magnetic field have been investigated by ensemble Monte Carlo simulations. The electron energy spectrum was calculated self-consistently. Due to the effect of Hartree potent … [J. Appl. Phys. 105, 113708 (2009)] published Fri Jun 5, 2009.
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Effect of spin-polarized electrons on terahertz emission from photoexcited GaAs
Posted on June 5th, 2009 No commentsJames M. Schleicher, Shayne M. Harrel, and Charles A. Schmuttenmaer<br/> The influence of elliptically and circularly polarized excitation on terahertz emission from unbiased bulk GaAs at normal incidence and room temperature is reported. Illumination of GaAs above the bandgap produces both spin-polarized electrons and shift currents. The induced currents are monitored v … [J. Appl. Phys. 105, 113116 (2009)] published Fri Jun 5, 2009.
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Optical properties of antimony-doped p-type ZnO films fabricated by pulsed laser deposition
Posted on June 5th, 2009 No commentsX. H. Pan, W. Guo, Z. Z. Ye, B. Liu, Y. Che et al.<br/> We investigated optical properties of Sb-doped p-type ZnO films grown on n-Si (100) substrates by oxygen plasma-assisted pulsed laser deposition. Two acceptor states, with the acceptor levels of 161 and 336 meV, are identified by well-resolved photoluminescence spectra. Under oxygen-rich conditions, … [J. Appl. Phys. 105, 113516 (2009)] published Fri Jun 5, 2009.
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Magnetic switching field distribution of patterned CoPt dots
Posted on June 5th, 2009 No commentsM. Abes, M. V. Rastei, J. Venuat, A. Carvalho, S. Boukari et al.<br/> We report on the interplay between the structural and the magnetic properties of different size dots patterned in two structurally different CoPt thin films with L1 order. The significant changes observed in the magnetic domain configuration and coercive field between the samples are interpreted in … [J. Appl. Phys. 105, 113916 (2009)] published Fri Jun 5, 2009.
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Cubic ScAlN solid solution thin films deposited by reactive magnetron sputter epitaxy onto ScN(111)
Posted on June 5th, 2009 No commentsCarina Hoglund, Javier Bareno, Jens Birch, Bjorn Alling, Zsolt Czigany et al.<br/> Reactive magnetron sputter epitaxy was used to deposit thin solid films of ScAlN (0<=x<=1) onto MgO(111) substrates with ScN(111) seed layers. Stoichiometric films were deposited from elemental Sc and Al targets at substrate temperatures of 600 degrees C. The films were analyzed by Rutherford backs … [J. Appl. Phys. 105, 113517 (2009)] published Fri Jun 5, 2009.