2013/04/18 by Bruno Vieira Ribeiro, Ribeiro, Bruno Vieira, Daniel Dourado de A. Santos +3
Physics and Astronomy · #FOS: Physical sciences #Plasma Physics (physics.plasm-ph) #Quantum Physics (quant-ph) #physics.plasm-ph #quant-ph
paper · pdf · doi:10.48550/arxiv.1304.5102
15 pages, 9 figures
arxiv created 2013/04/18 · arxiv updated 2013/04/19
In this study we report the effects of an external electromagnetic field on the collective properties of unmagnetized plasmas. The calculations are carried out in the semi-classical approximation, i.e., the electromagnetic field is treated classically and the electrons from a quantum mechanical viewpoint. The results show that the collective modes are damped away more smoothly and in a smaller frequency range than those reported by previous studies. An exponential-like decay of the plasmon frequencies as a function of the external field amplitude is readily observed. We successfully recreate the results of previous studies. We also find that the single photon processes has a pronounced effect on the decrease of the frequency range of modulation.