A Hilbert-Vlasov code for the study of high-frequency plasma beatwave accelerator
- Universite Henri Poincare Nancy-I (France)
- I.N.R.S. Energie et Materiaux, Varennes, Quebec (Canada)
- Centre Canadien de Fusion Magnetique, Varennes, Quebec (Canada)
High-frequency beatwave simulations relevant to the University of California at Los Angeles (UCLA) experiment with relativistic eulerian hybrid Vlasov code are presented. These Hilbert-Vlasov simulations revealed a rich variety of phenomena associated with the fast particle dynamics induced by beatwave experiment for a high ratio of driver frequency to plasma frequency {omega}{sub pump}/{omega}{sub pump} {approx} 33. The present model allows one to extend detailed modeling to frequency ratios greater than the current practical maximum of 10 or so, for Vlasov or particle-in-cell (PIC) codes, by replacing the Maxwell equations by mode equations for the electromagnetic Vlasov code. Numerical results, including beat frequency chirping (i.e., pump frequency linearly decreasing with time), show that the amplitude limit due to relativistic detuning can be enhanced with accelerated particles up to the ultrarelativistic energies with a high-acceleration gradient of more than 25 GeV/m.
- OSTI ID:
- 264373
- Journal Information:
- IEEE Transactions on Plasma Science, Journal Name: IEEE Transactions on Plasma Science Journal Issue: 2 Vol. 24; ISSN ITPSBD; ISSN 0093-3813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Relativistic Bi-Stability in a Plasma Beatwave Accelerator
A nonperiodic Euler--Vlasov code for the numerical simulation of laser--plasma beat wave acceleration and Raman scattering