Hasil untuk "physics.geo-ph"

Alberto G. Albesa

V. O. Konstantinov, E. A. Baranov, Zhang Fan et al.

Nikolai Avreline, Sergey V Kutsaev Ph. D., Alexandre Avreline et al.

Abstract In conventional linear accelerators, the beam is accelerated with a synchronous harmonic of the radio frequency field where the electric field component is collinear with the beam direction. This approach requires the design of complex accelerating structures, especially for low-energy heavy ions. If the beam motion were sustainably coupled to transverse electromagnetic fields, this could significantly simplify the accelerating structure design, and even allow acceleration with free-space waves. However, despite the long history of the proposed concept for accelerating low-velocity ion beams, it has not found practical application, partially because of the complexity of the technical design. In this paper, we present a practical design approach for this undulator-based accelerator for low-energy heavy-ions, reminiscent of the inverse free electron laser operating principle, but in a different parameter space.

Mohamad Reza Soltanian, Zhenxue Dai

K L Dooley, LIGO Scientific Collaboration

Ph Chomaz, F Gulminelli

Ph. Brax, R. Peschanski

George T. Yu

Ph. Bréchignac

Ph. Grossel, J.M. Vigoureux, D. Van Labeke

C. Girard, J.M. Vigoureux, D. Van Labeke et al.

Cl. Gabriel, Ph. Spindel, M. Rooman

D.F. Merriam

Ilir F. Progri

Ilir F. Progri

Ilir F. Progri

A. Samain, H. Capes, Ph. Ghendrih et al.

Radial particle transport is considered in a plasma with ergodic and stochastic flux lines. The self-consistent electric field is neglected and the particle flux is due to a succession of mass convections along flux lines, in series with very small-scale-length transverse diffusion between neighboring flux lines. The dependence of the average radial flux on the thermodynamic forces, namely the pressure gradient that controls the parallel convection, and the density gradient that controls the small-scale transverse diffusion is investigated. The conditions for which the average radial flux is driven by the average pressure or density gradient are derived.

R. R. Alfano, V. Petricevic, S. G. Demos

Geo. H. Mellen Co., Geo. H. Mellen, Henry G. Gilbert Nursery and Seed Trade Catalog Collection.