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Tuesday, August 11, 2020 | History

2 edition of Anomalous plasma heating induced by modulation of the current-density profile = found in the catalog.

Anomalous plasma heating induced by modulation of the current-density profile =

Nicolaas Joost Lopes Cardozo

Anomalous plasma heating induced by modulation of the current-density profile =

Anomale verhitting van een plasma opgewekt door vervorming van het stroomdichtheidsprofiel

by Nicolaas Joost Lopes Cardozo

  • 227 Want to read
  • 24 Currently reading

Published by Rijksuniversiteit te Utrecht] in [Utrecht .
Written in English

    Subjects:
  • Plasma heating.,
  • Plasma confinement.,
  • Plasma diagnostics.

  • Edition Notes

    Other titlesAnomale verhitting van een plasma opgewekt door vervorming van het stroomdichtheidsprofiel.
    Statementdoor Nicolaas Joost Lopes Cardozo.
    Classifications
    LC ClassificationsQC718.5.H5 L67 1985
    The Physical Object
    Paginationix, 110 p. :
    Number of Pages110
    ID Numbers
    Open LibraryOL2283777M
    LC Control Number86149548

    The photo-induced density of free-electron plasma onto the 1-mm-thick slab of n-type silicon is spatially reconfigurable, thereby producing permittivity modifications in a thin film at the surface Cited by:   Professor of Physics & Head of Department Department of Physics University College Ireland IRIS Research profile Tel: (+) 23 27 Fax: (+) 69 49 Email: [email protected] Degrees Ph.D. in Physics, Trinity College, University of Dublin, Ireland, in Experimental Physics and Mathematical Science, National University of Ireland, Univ. .

    Magnonics, an emerging research field, aims to control and manipulate spin waves in magnetic materials and structures. However, the current understanding of spin waves remains quite limited. This review attempts to provide an overview of the anomalous behaviors of spin waves in various types of magnetic materials observed thus far by inelastic light scattering by: 1. @article{osti_, title = {Modulated heat pulse propagation and partial transport barriers in chaotic magnetic fields}, author = {Castillo-Negrete, Diego del and Blazevski, Daniel}, abstractNote = {Direct numerical simulations of the time dependent parallel heat transport equation modeling heat pulses driven by power modulation in three-dimensional chaotic .

    The U.S. Department of Energy's Office of Scientific and Technical Information. Blaunstein N., Evolution of a stratified plasma structure induced by local heating of the ionosphere, Journal of Atmospheric and Solar-Terrestrial Physics, 59, 3, , (). [45] Blaunstein N., Changes of the electron concentration profile during local heating of the ionospheric plasma, Journal of Atmospheric and Terrestrial Physics,


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Anomalous plasma heating induced by modulation of the current-density profile = by Nicolaas Joost Lopes Cardozo Download PDF EPUB FB2

The high-voltage pulse results in a modulation of the current-density profile: the (normally already oeaked) profile sharpens, the current concentrates in the centre of the plasma column. This is a non-equi­ librium situation. It relaxes to the normal current distribution within - 2 : N.

Lopes Cardozo. The delay is puzzling since the energy confinement time of the plasma is only msec. Analysis of X-ray measurements suggests that magnetic energy is converted into heat. Extra current induced on top of the running plasma current spreads over the entire plasma.

Anomalous plasma heating induced by modulation of the current-density profile () Pagina-navigatie: Main; Save publication. Save as MODS; Export to Mendeley; Save as EndNote; Export to RefWorks; Title: Anomalous plasma heating induced by modulation of the current-density profile: Author: N.J.

Lopes Cardozo, Date issued: Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link); Author: N.J. Lopes Cardozo.

The initial heating of the coronal plasma requires anomalous resistivity because Joule heating with classical resistivity is unable to explain the observed densities, temperatures, and rapid timescales in flare plasmas.

Other forms of coronal flare plasma heating, such as slow shocks, electron beams, proton beams. We demonstrate the effect of substrates on the temperature change induced by the anomalous Ettingshausen effect in ferromagnetic thin films.

The experimental results show that, in comparison with conventional experiments using bulk substrates, the temperature modulation due to the anomalous Ettingshausen effect in Ni films can be enhanced by more than an Author: Rajkumar Modak, Ken-ichi Uchida, Ken-ichi Uchida.

In studies with three-frequency heating when compared to two-frequency heating, the beam intensity for O7+ increased from to eμA, Kr23+. The energy density of the ion-sound turbulence in the saturated state, the ion and electron heating rates, as well as the effective collision frequency arising from the anomalous absorption of the.

Due to the energy spread of the beam, the proton current varies from ∼1 kA at 1 mm from the plasma source to ∼ A at 1 cm.

Due to the beam divergence of ∼10° half-angle, the beam current density also decreases rapidly with the distance from the target (1 MA/cm 2 at 1 mm and 1 kA/cm 2 at 1 cm). The proton beam is then propagated through a supersonic jet of He Cited by: 3.

To test Oscillating Field Current Drive, two 1 mva hz oscillators have been installed in the toroidal and poloidal magnetic field circuits of the MST reversed field pinch. These oscillators add an alternating component to the magnetic field which affects the current profile and magnetic tearing fluctuations.

The amplitudes of the m=1 and m=0 modes exhibit modulation at the. The dynamics of the heating of a plasma by short-duration laser pulses is considered in the spherical case on the assumption that the laser radiation frequency exceeds the plasma frequency. The range of validity of the theoretical model employed corresponds to ultrashort pulses of less than 10 –10 sec duration.

The numerical results for these three models show that the transport mechanism is superdiffusive with an anomalous diffusion exponent in the range (, ). Introduction Purely diffusive transport processes cannot explain a variety of transport experiments in magnetically confined plasmas. The temperature modulation in the U-shaped FePt induced by the J c flow is observed for the AEE measurement using the LIT technique (figure 1(a)) as in the previous work while the ANE voltage appearing between the terminals of U-shaped FePt is measured under temperature gradient generated by the heater line built into the device (figure 1(b.

Investigations on the ambipolar diffusion of an electron-hole plasma transverse to a magnetic field have been carried out in InSb.

A plasma layer, produced at the surface of the sample by a short laser pulse, was moved through the sample in crossed electric and magnetic fields by the Lorentz force.

From the broadening of the plasma layer we found at 80K an Cited by: In optics, one important and familiar consequence of dispersion is the change in the angle of refraction of different colors of light, as seen in the spectrum produced by a dispersive prism and in chromatic aberration of lenses.

Design of compound achromatic lenses, in which chromatic aberration is largely cancelled. To explore the character of transport in a plasma turbulence model with avalanche transport, the motion of tracer particles has been followed. Both the time evolution of the moments of the distribution function of the tracer particle radial positions, 〈|r(t)−r(0)|n〉, and their finite scale Lyapunov number are used to determine the anomalous diffusion exponent, ν.

The numerical Cited by: The magnitude of the ion temperature oscillation varies depending on a not well understood set of control parameters (e.g., loop voltage amplitude, current, density, etc.), causing poor reproducibility in the anomalous heating mechanism.

An increase in the oscillator power and lowered frequency are planned. Numerical simulation is made of the transient heat conduction during local heating in a model coronal magnetic loop with an axial electric current.

It is assumed that a segment near the top of the normal coronal loop is heated to above K by a sufficiently small heat input as compared with the total flare energy.

A hump appears in the velocity distribution Cited by: 4. is often anomalous; second, single probe theory, which requires current density to 'vanish' in the far plasma (effectively coming from large chamber walls in a laboratory), may not apply because distances to near walls are short [19].

Here, we further consider electron cooling and heating processes for the retarding range. TAE-induced energetic ion transport and loss In LHD, anomalous radial transport of co-going beam ions toward the outboard side of the torus caused by TAEs has been recognized from rapid increases in CX fast neutrals measured FIG.

a) Profiles of T e, n e for the discharge shown in Fig. b) Rotational transform profile. c) Shear Alfvén. PHYSICAL REVIEW A 83, () Density and temperature scaling of disorder-induced heating in ultracold plasmas S. D. Bergeson, 1A. Denning, M. Lyon,1 and F. Robicheaux2 1Department of Physics and Astronomy, Brigham Young University, Provo, UtahUSA 2Department of Physics, Auburn University, Auburn, AlabamaUSA (Received 22 .Aspects in Anomalous Transport in Plasmas is the first book to systematically consider anomalous plasma transport theory and provides a unification of the many theoretical models by emphasizing interrelations between seemingly different methodologies.

It is not intended as a catalogue of the vast number of plasma instabilities leading to Format: Hardcover.Anomalous plasma resistivity due to ion acoustic turbulence: J.

M. Dawson: Chu, Cheng. Investigations of anomalous processes associated with the lower hybrid waves: J. M. Dawson: Sauthoff, Ned. The structure of fluctuations in the trapped electron regime of the FM-1 Spherator: J. A. Schmidt: Johnston, Russell S. Classical induced scattering of.