Vlasov Simulations of Electron Plasma Waves: self-focusing and modulational instability

Details Vlasov Simulations of Electron Plasma Waves: self-focusing and modulational instability Vlasov Simulations of Electron Plasma Waves: self-focusing and modulational instability

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.k1035b&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #K1.035

Physics

Scientific paper

Vlasov simulations of nonlinear electron plasma (EPW) waves are presented in 2D (2 space and 2 velocity dimensions) with LOKI (Banks et al, Phys. Plasmas 18, 052102 (2011)). EPWs are created with an external traveling wave potential with a transverse envelope of width δy such that thermal electrons transit the wave in a ``sideloss'' time, tsl˜δy/ve where ve is the electron thermal velocity. The plasma wave field envelope and associated self-consistent quasi-steady distribution of trapped electrons are studied after the external drive is turned off. For sufficiently short times and large enough wave amplitudes, the magnitude of the negative frequency shift from trapped electrons is a local function of electrostatic potential and the phase of the wave on axis lags the off axis phase. Analysis and simulations are presented of the damping and trapped-electron-induced self-focusing (H. Rose, Phys. Plasmas 12, 012318 (2005)) of the finite-amplitude EPW. The onset of trapped electron modulational instability (S. Brunner and E. Valeo, PRL 93, 145003 (2004)) both along and transverse to the direction of propagation is studied as a function of the wave amplitude and the system length.

Affiliated with

Also associated with

No associations

Rating

Vlasov Simulations of Electron Plasma Waves: self-focusing and modulational instability does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Vlasov Simulations of Electron Plasma Waves: self-focusing and modulational instability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vlasov Simulations of Electron Plasma Waves: self-focusing and modulational instability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1366695