http://arxiv.org/abs/2210.11086
We theoretically and numerically investigate the ion acoustic feature of collective Thomson scattering (CTS) in two-stream plasmas. When the electron distribution functions of two components overlap each other, the theoretical spectrum shows asymmetry that is not seen in the spectra from Maxwell distributions because of the electron Landau damping. Numerical simulations support the theoretical spectra. We also present the effect of two-stream type instability in the ion acoustic feature showing the opposite trend to the overlapped case resulting from the asymmetry in electron distribution function caused by the instability. Our results show that the two-stream plasmas have significant effects on CTS spectra and the waves resulting from instability can be observed in the ion acoustic feature.
K. Sakai, T. Nishimoto, S. Isayama, et. al.
Fri, 21 Oct 22
41/76
Comments: 8 pages, 6 figures
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