Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1863247 | Physics Letters A | 2016 | 5 Pages |
Abstract
A single particle model has been applied to examine the competition between radiation from a strong Langmuir source and coherent bremsstrahlung in ultra-relativistic laser–plasma interactions. Output from this model shows generally satisfactory agreement with that from particle-in-cell (PIC) simulations, in particular reproducing spectra characterised by a decay index p=5/3p=5/3. At the highest intensities considered, both model and PIC spectra show the competing contribution from relativistic electron bremsstrahlung, characterised by a further relaxation in the decay index to p=2/3p=2/3. Combinations of laser and plasma parameters have been identified that define regions of parameter space where one or other emission is dominant.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
T.J.M. Boyd, R. Ondarza-Rovira,