Longitudinal compression of a velocity-tailored, intense neutralized beam at 300 keV, 25 mA has been demonstrated. The compression takes place in a 1-2 m drift section filled with plasma to provide space-charge neutralization. An induction cell produces a head-to-tail velocity ramp that longitudinally compresses the neutralized beam, enhancing the beam peak current by a factor of 50 and produci...

Experimental evidence for a positive correlation is established between the magnitude of electromagnetic fluctuations up to the lower-hybrid frequency range and enhancement of reconnection rates in a well-controlled laboratory plasma. The fluctuations belong to the right-hand polarized whistler wave branch, propagating obliquely to the reconnecting magnetic field, with a phase velocity comparab...

The authors examined the effect of 3,4-diaminopyridine (DAP) on the gravity-dependent (GD) vertical ocular drift component of downbeat nystagmus in 11 patients with idiopathic cerebellar ataxia. With the head tilted downward (45 degrees ), DAP reduced slow phase velocity (SPV) in 7 of 11 patients by 36%. Its efficacy correlated with the GD modulation. DAP minimizes the gravity-independent veloc...

*' * tla "fig ■ MII V tkmi dMMibod pmviuuel/^the distribution function of electron energies for electrons in argon and mixtures of hydrogen and argon obtained by a numerical solution of the Boltzmann equation which takes Into account elastic and inelastic collisions. By taking appropriate averages over the distribution function, the electron drift velocity w, magnetic drift velocity w^i and cha...

The dynamics of a classical particle in a one-dimensional, randomly driven potential is analysed both analytically and numerically. The potential considered here is composed of two identical spatially periodic saw-tooth-like components, one of which is externally driven by a random force. We show that under certain conditions the particle may travel against the averaged external force, performi...

Please cite this article in press as: Hwang E et a logic applications. Solid State Electron (2011), d In this paper, the scalability of In0.7Ga0.3As QWFET is investigated using two-dimensional numerical drift–diffusion simulation. Numerical drift–diffusion simulations were calibrated using experimental results on short-channel In0.7Ga0.3As QWFETs [7] to include the effects of velocity overshoot...

Quantum effects in the noninertial Brownian motion of a particle in a one-dimensional ratchet potential are treated in the high temperature and weak bath-particle coupling limit by solving a quantum Smoluchowski equation for the time evolution of the Wigner function in configuration space. In particular, an analytical expression for the stationary average drift velocity for constant driving for...

Near-fault ground motions have caused very much damage in the vicinity of seismic sources during recent earthquakes. It is well known that under specific circumstances, intensive ground shakings near fault ruptures may be characterized by short-duration impulsive motions. This pulse-type motion is generally particular to the forward direction, where the fault rupture propagates towards the site...