Computer Science – Numerical Analysis
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1242..349r&link_type=abstract
PLASMAS IN THE LABORATORY AND THE UNIVERSE: Interactions, Patterns, and Turbulence. AIP Conference Proceedings, Volume 1242, pp
Computer Science
Numerical Analysis
1
Electron Beams, Cyclotron Resonance, Transmission Lines, Electric Impedance Measurement, Electron And Positron Beams, Plasma Heating By Radio-Frequency Fields, Icr, Icp, Helicons, Waveguides, Transmission Lines, Striplines, Measurements In Electric Variables
Scientific paper
Nanosecond pulsed electron beams in the 1-10 keV energy range have been characterized by means of an electrostatic diagnostic in the Malmberg-Penning trap ELTRAP. The beam length has been inferred through the numerical analysis of the signals measured across the overall load impedance of a planar charge collector. The presence of space charge effects leading to a longitudinal spread of the beam during its transport are evidenced at low injection energies. This feature has also been tested with the use of a one-dimensional fluid model and with two-dimensional, cylindrically-symmetric Particle-In-Cell simulations, whose results are compared to the experimental observations.
Cavaliere Fabio
Cavenago Marco
de Luca Fabiana
Maero Giancarlo
Paroli B.
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