Meeting the challenge of detecting ion plasma waves

Bruno S. Bauer, R. P. Drake, Kent G. Estabrook, J. F. Camacho, Robert G. Watt, Mark D. Wilke, Garland E. Busch, Steven E. Caldwell, Stuart A. Baker

doi:10.1063/1.871243

Meeting the challenge of detecting ion plasma waves

DOI PDF 被引用文献1件

Bruno S. Bauer

Lawrence Livermore National Laboratory, Livermore, California 94551
R. P. Drake

Lawrence Livermore National Laboratory, Livermore, California 94551
Kent G. Estabrook

Lawrence Livermore National Laboratory, Livermore, California 94551
J. F. Camacho

Lawrence Livermore National Laboratory, Livermore, California 94551
Robert G. Watt

Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Mark D. Wilke

Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Garland E. Busch

Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Steven E. Caldwell

Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Stuart A. Baker

EG&G/EM—Los Alamos Operations, Los Alamos, New Mexico 87544

説明

<jats:p>Ion plasma waves—purely electrostatic ion waves with a wavelength of order of the electron Debye length and frequency of the order of the ion plasma frequency—have long been known in theory but have proven difficult to detect experimentally. The difficulties stemmed from the techniques used to produce the plasma and to drive and detect the waves. In the work reported here, these problems were overcome by using resonant laser scattering to detect ion plasma waves in a multiply ionized, laser-produced plasma. This nonetheless required careful experimental design to minimize frequency smearing of the scattered signal by plasma gradients. The plasma was extensively characterized, allowing comparison of the theoretical dispersion relation with the wave data. The agreement of these two provides conclusive proof of the detection of ion plasma waves.</jats:p>