TITLE

Azimuthally correlated ablation between z-pinch wire cores

AUTHOR(S)
Zier, J. C.; Douglass, J. D.; Blesener, I. C.; Blesener, K. S.; Chalenski, D. A.; Gilgenbach, R. M.; Greenly, J. B.; Hammer, D. A.; Knapp, P. F.; Kusse, B. R.; Lau, Y. Y.; McBride, R. D.; Syed, W.; Yu, E. P.
PUB. DATE
October 2009
SOURCE
Physics of Plasmas;Oct2009, Vol. 16 Issue 10, p102702
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Azimuthally correlated wire core ablation was compared for closely spaced versus widely spaced wires in a 1 MA Z-pinch. X-ray point-projection diagnostics revealed that 240 μm spaced wires exhibited a correlation coefficient approaching unity in both real space and in k-space. This correlated ablation between wires at a fixed axial location is believed to occur due to an enhanced, localized Joule heating. Wires separated by 2.47 mm or greater were uncorrelated in real space, but correlated in k-space, indicating the ablation structure between wires was shifted in phase.
ACCESSION #
44910044

 

Related Articles

  • Fully nonlinear features of the energetic beam-driven instability. Lesur, M.; Idomura, Y.; Garbet, X. // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p092305 

    The so-called Berk–Breizman model is applied to a cold bulk, weak warm beam, one-dimensional plasma, to investigate the kinetic instability arising from the resonance of a single electrostatic wave with an energetic particle beam. A Vlasov code is developed to solve the initial value...

  • Relativistic performance analysis of a high current density magnetron injection gun. Barnett, L. R.; Luhmann, Jr., N. C.; Chiu, C. C.; Chu, K. R. // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p093111 

    Electron beam quality is essential to the performance of millimeter-wave gyroamplifiers, particularly the gyrotron traveling-wave tube amplifier, which is extremely sensitive to the electron velocity spread and emission uniformity. As one moves up in power and frequency, the quality of the...

  • Experimental investigation of the Boltzmann relation for a bi-Maxwellian distribution in inductively coupled plasmas. Jin Young Bang; Chin Wook Chung // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p093502 

    In plasma, the Boltzmann relation is often used to connect the electron density to the plasma potential because it is not easy to calculate electric potentials on the basis of the Poisson equation due to the quasineutrality. From the Boltzmann relation, the electric potential can be simply...

  • Runaway electrons in a fully and partially ionized nonideal plasma. Ramazanov, T. S.; Turekhanova, K. M. // Physics of Plasmas;Oct2005, Vol. 12 Issue 10, p102502 

    This paper reports on a study of electron runaway for a nonideal plasma in an external electric field. Based on pseudopotential models of nonideal fully and partially ionized plasmas, the friction force was derived as a function of electron velocities. Dependences of the electron free path on...

  • Interaction of two elongated dust grains in flowing plasmas studied by numerical simulations. Miloch, W. J.; Vladimirov, S. V.; Pécseli, H. L.; Trulsen, J. // Physics of Plasmas;Feb2009, Vol. 16 Issue 2, pN.PAG 

    Interaction potentials between two insulating elongated dust grains in a supersonic plasma flow are studied by a particle-in-cell numerical method. It is found that the spatial variations of the charge distribution and the plasma potential depend on the orientation and the relative distance of...

  • Mathematical modeling of magnetic jets. Galanin, M. P.; Lukin, V. V.; Chechetkin, V. M. // AIP Conference Proceedings;1/1/2010, Vol. 1206 Issue 1, p293 

    An MHD model for the formation of a jet in the vicinity of a compact object with a supersonic accretion regime is constructed, assuming that the plasma is perfectly electrically conducting. A stable, collimated jet of plasma along the z axis symmetric about the plane of the accretion disk is...

  • Three-dimensional fluid simulations of a simple magnetized toroidal plasma. Ricci, Paolo; Rogers, B. N. // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p092307 

    Three-dimensional fluid simulations are performed in a simple magnetized toroidal plasma, in which vertical and toroidal magnetic fields create helicoidal magnetic field lines that terminate on the torus vessel. The simulations are carried out in the three-dimensional flux tube that wraps around...

  • Quantum recoil and Bohm diffusion. Melrose, D. B.; Mushtaq, A. // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p094508 

    It is argued that the inclusion of the Bohm potential in quantum fluid equations is equivalent to inclusion of a nonrelativistic form of the quantum recoil in plasma kinetic theory. The Bohm term is incorrect when applied to waves with phase speed greater than the speed of light.

  • Observation of a critical pressure gradient for the stabilization of interchange modes in simple magnetized toroidal plasmas. Federspiel, L.; Labit, B.; Ricci, P.; Fasoli, A.; Furno, I.; Theiler, C. // Physics of Plasmas;Sep2009, Vol. 16 Issue 9, p092501 

    The existence of a critical pressure gradient needed to drive the interchange instability is experimentally demonstrated in the simple magnetized torus TORoidal Plasma EXperiment [A. Fasoli et al., Phys. Plasmas 13, 055902 (2006)]. This gradient is reached during a scan in the neutral gas...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics