Observation of double pseudowaves in an ion–beam–plasma system
Project supported by the National Natural Science Foundation of China (Grant Nos. 11575183 and 11705201).
Upper parts: trajectories of the received signals with respect to the distance from the excitation grid. Lower parts: time-of-flight graph for the received signals (peak time versus distance). Left column: εb = 21.2 eV. Right column: εb = 2.8 eV. The dashed lines indicate the trajectories of the signal peaks. Vpp = 20 V and τ = 4.31 μs.
