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- Brian J. Albright, Don S. Lemons, Michael Jones, Dan Winske
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2002

The direct simulation Monte Carlo method of modeling fluids requires sampling one or more random variables every time step for each particle. In this paper a "quiet Monte Carlo" technique is proposed that eliminates the random sampling and the noise it produces by deterministically generating a small number of computational particles. The technique isâ€¦ (More)

- Don S. Lemons, Dan Winske, William Daughton, Brian J. Albright
- J. Comput. Physics
- 2009

Mach number cases, whose laminar structures have been adequately described by magnetosonic Simulations of a high Mach number shock with wavetrains that scale as C/mpe ITidman and Krall, parameters typical of the earth's bow hock have 1971). Computer simulations including both been performed using a hybrid (particle ions, electron and ion scales, haveâ€¦ (More)

- Dan Winske
- IEEE Transactions on Plasma Science
- 2004

The ion drag force on dust grains in a dusty plasma contributes significantly to the formation of equilibrium dust layers and void regions in radio-frequency discharges. In addition to the drag due to the direct collection of ions and to momentum transfer of ions in the electric field near grains, dust grains can also be subject to a drag force due to theâ€¦ (More)

A hybrid simulation model with kinetic ions, massless fluid electrons, and phenomenological resistivity is used to study the perpendicular configuration of the bow shocks of the earth and other planets. We investigate a wide range of parameters, including the upstream Mach number, electron and ion beta (ratios of thermal to magnetic pressure), andâ€¦ (More)

- C. Niemann, Walter Gekelman, +8 authors Pat Pribyl
- 2014

We report the first measurements of the formation and structure of a magnetized collisionless shock by a laser-driven magnetic piston in a current-free laboratory plasma. This new class of experiments combines a high-energy laser system and a large magnetized plasma to transfer energy from a laser plasma plume to the ambient ions through collisionlessâ€¦ (More)

- Xiangrong Fu, Misa M Cowee, +12 authors Dan Winske
- Journal of geophysical research. Space physics
- 2014

Magnetospheric banded chorus is enhanced whistler waves with frequencies Ï‰r <Î© e , where Î© e is the electron cyclotron frequency, and a characteristic spectral gap at Ï‰r â‰ƒÎ© e /2. This paper uses spacecraft observations and two-dimensional particle-in-cell simulations in a magnetized, homogeneous, collisionless plasma to test the hypothesis that bandedâ€¦ (More)

- C. Niemann, C. G. Constantin, +10 authors B. Van Campernolle
- 2010

We present measurements of the expansion of a laser-produced plasma across a DC magnetic field (300 G) in a large (1m x 17 m), magnetized plasma (He, 4x10 cm, 5 eV). The bulk blow-off velocity of the laser-plasma is initially larger than the AlfvÃ©n velocity in the ambient plasma (MA=2.5). We measured in detail the dynamics of the diamagnetic cavity andâ€¦ (More)

- D. B. Schaeffer, Euclid TechLabs LLC Everson, +8 authors C. Niemann
- 2014

The interaction of a laser-driven super-Alfv enic magnetic piston with a large, preformed magnetized ambient plasma has been studied by utilizing a unique experimental platform that couples the Raptor kJ-class laser system [Niemann et al., J. Instrum. 7, P03010 (2012)] to the Large Plasma Device [Gekelman et al., Rev. Sci. Instrum. 62, 2875 (1991)] at theâ€¦ (More)

- Geoffrey D Reeves, Reiner H. W. Friedel, +6 authors Dan Winske
- 2005

The space radiation environment presents serious challenges to spacecraft design and operations: adding costs or compromising capability. Our understanding of radiation belt dynamics has changed dramatically as a result of new observations. Relativistic electron fluxes change rapidly, on time scales less than a day, in response to geomagnetic activity.â€¦ (More)