caa a22 4500 386368058 CHVBK 20180307111943.0 cr unu---uuuuu 161130e198904 xx s 000 0 eng 10.1017/S0022377800013830 doi S0022377800013830 pii (NATIONALLICENCE)cambridge-10.1017/S0022377800013830 Reflection of ion-acoustic waves from bipolar potential structures [Elektronische Daten] Reflection of ion-acoustic waves from the ion sheath in front of the separation grid in a double-plasma device has been investigated experimentally. The plasma potential φ of the source plasma was controlled relative to that of the target plasma. When eφ < κΤe, where Τe is the electron temperature, no reflection was observed. The reason for this is that ions are drifting towards the grid with the Bohm velocity, i.e. the ion-acoustic velocity. When eφ > κΤe the reflected wave consists of the ion-acoustic wave and the ion beam mode. The reflection coefficient for the ion-acoustic wave is about unity. This high efficiency is due to reflection of the ions themselves. Copyright © Cambridge University Press 1989 Nakamura Y. Institute of Space and Astronautical Science, Komaba, Meguro-ku, Tokyo 153, Japan Chutia Joyanti Institute of Space and Astronautical Science, Komaba, Meguro-ku, Tokyo 153, Japan Journal of Plasma Physics Cambridge University Press 41/2(1989-04), 243-255 0022-3778 41:2<243 1989 41 PLA https://doi.org/10.1017/S0022377800013830 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022377800013830 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nakamura Y. Institute of Space and Astronautical Science, Komaba, Meguro-ku, Tokyo 153, Japan NATIONALLICENCE 700 1- Chutia Joyanti Institute of Space and Astronautical Science, Komaba, Meguro-ku, Tokyo 153, Japan NATIONALLICENCE 773 0- Journal of Plasma Physics Cambridge University Press 41/2(1989-04), 243-255 0022-3778 41:2<243 1989 41 PLA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge