Filamented electron beams have been observed to be emitted from the rear of thin solid targets irradiated by a high-intensity short-pulse laser when there is low-density plasma present at the back of the target. These. observations are consistent with a laser-generated beam of relativistic electrons propagating through the, target. which is subsequently fragmented by a Weibel-like instability in the low-density plasma at the. rear. These, measurements are in agreement with particle-in-cell simulations and theory, since the filamentation instability is predicted to be dramatically enhanced when the electron beam density approaches that of the background plasma.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Statistical and Nonlinear Physics
- Mathematical Physics
Wei, M. S., Beg, F. N., Clark, E. L., Dangor, A. E., Evans, R. G., Gopal, A., Ledingham, K. W. D., McKenna, P., Norreys, P. A., Tatarakis, M., Zepf, M., & Krushelnick, K. (2004). Observations of the filamentation of high-intensity laser-produced electron beams. Physical Review E, 70(5 2), 056412-1-056412-6. . https://doi.org/10.1103/PhysRevE.70.056412