Direct measurement of electron sloshing of an inertial Alfvén wave
Abstract We report laboratory measurements of the parallel current carried by suprathermal electrons associated with inertial Alfvén wave excitation in the laboratory. The experiments presented here use a novel wave absorption diagnostic that measures the suprathermal tails of the electron distribut...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-05-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL068865 |
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| author | J. W. R. Schroeder F. Skiff C. A. Kletzing G. G. Howes T. A. Carter S. Dorfman |
| author_facet | J. W. R. Schroeder F. Skiff C. A. Kletzing G. G. Howes T. A. Carter S. Dorfman |
| author_sort | J. W. R. Schroeder |
| collection | DOAJ |
| description | Abstract We report laboratory measurements of the parallel current carried by suprathermal electrons associated with inertial Alfvén wave excitation in the laboratory. The experiments presented here use a novel wave absorption diagnostic that measures the suprathermal tails of the electron distribution parallel to the mean magnetic field. The diagnostic is used to probe the electron distribution as an inertial Alfvén wave propagates along the mean magnetic field. These results identify, for the first time, the periodic motion of suprathermal electrons participating in the inertial Alfvén wave itself, in agreement with predictions from linear kinetic theory. |
| format | Article |
| id | doaj-art-0e251668fbb84d79a768fdbe22f09ec0 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-0e251668fbb84d79a768fdbe22f09ec02025-08-20T02:31:41ZengWileyGeophysical Research Letters0094-82761944-80072016-05-0143104701470710.1002/2016GL068865Direct measurement of electron sloshing of an inertial Alfvén waveJ. W. R. Schroeder0F. Skiff1C. A. Kletzing2G. G. Howes3T. A. Carter4S. Dorfman5Department of Physics and Astronomy University of Iowa Iowa City Iowa USADepartment of Physics and Astronomy University of Iowa Iowa City Iowa USADepartment of Physics and Astronomy University of Iowa Iowa City Iowa USADepartment of Physics and Astronomy University of Iowa Iowa City Iowa USADepartment of Physics and Astronomy University of California Los Angeles California USADepartment of Physics and Astronomy University of California Los Angeles California USAAbstract We report laboratory measurements of the parallel current carried by suprathermal electrons associated with inertial Alfvén wave excitation in the laboratory. The experiments presented here use a novel wave absorption diagnostic that measures the suprathermal tails of the electron distribution parallel to the mean magnetic field. The diagnostic is used to probe the electron distribution as an inertial Alfvén wave propagates along the mean magnetic field. These results identify, for the first time, the periodic motion of suprathermal electrons participating in the inertial Alfvén wave itself, in agreement with predictions from linear kinetic theory.https://doi.org/10.1002/2016GL068865Alfvén waveswave‐particle interactionsauroral phenomenaLarge Plasma Devicemagnetosphere |
| spellingShingle | J. W. R. Schroeder F. Skiff C. A. Kletzing G. G. Howes T. A. Carter S. Dorfman Direct measurement of electron sloshing of an inertial Alfvén wave Geophysical Research Letters Alfvén waves wave‐particle interactions auroral phenomena Large Plasma Device magnetosphere |
| title | Direct measurement of electron sloshing of an inertial Alfvén wave |
| title_full | Direct measurement of electron sloshing of an inertial Alfvén wave |
| title_fullStr | Direct measurement of electron sloshing of an inertial Alfvén wave |
| title_full_unstemmed | Direct measurement of electron sloshing of an inertial Alfvén wave |
| title_short | Direct measurement of electron sloshing of an inertial Alfvén wave |
| title_sort | direct measurement of electron sloshing of an inertial alfven wave |
| topic | Alfvén waves wave‐particle interactions auroral phenomena Large Plasma Device magnetosphere |
| url | https://doi.org/10.1002/2016GL068865 |
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