Slowly evolving, regularly spaced patterns have been observed in proton projection images of plasma channels drilled by intense (greater than or similar to 10(19) W cm(-2)) short (similar to 1 ps) laser pulses propagating in an ionized gas jet. The nature and geometry of the electromagnetic fields generating such patterns have been inferred by simulating the laser-plasma interaction and the following plasma evolution with a two-dimensional particle-in-cell code and the probe proton deflections by particle tracing. The analysis suggests the formation of rows of magnetized soliton remnants, with a quasistatic magnetic field associated with vortexlike electron currents resembling those of magnetic vortices.
|Autori:||Romagnani L; Bigongiari A; Kar S; Bulanov SV; Cecchetti CA; Esirkepov TZ; Galimberti M; Jung R; Liseykina TV; Macchi A; Osterholz J; Pegoraro F; Willi O; Borghesi M|
|Titolo:||Observation of Magnetized Soliton Remnants in the Wake of Intense Laser Pulse Propagation through Plasmas|
|Anno del prodotto:||2010|
|Digital Object Identifier (DOI):||10.1103/PhysRevLett.105.175002|
|Appare nelle tipologie:||1.1 Articolo in rivista|