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Detailed Reference Information |
Cartier, S.L., D’Angelo, N. and Merlino, R.L. (1986). A laboratory study of ion energization by EIC waves and subsequent upstreaming along diverging magnetic field lines. Journal of Geophysical Research 91: doi: 10.1029/JA091iA07p08025. issn: 0148-0227. |
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A laboratory study related to energetic upstreaming ions in the ionosphere-magnetosphere system is described. The experiment was carried out in a cesium Q machine plasma with a region of nonuniform magnetic field. Electrostatic ion cyclotron waves were excited by drawing an electron current to a small baised exciter electrode. In the presence of the instability, ions are heated in the direction perpendicular to B. Using a gridded retarding potential ion energy analyzer, we followed the evolution of the ion velocity distribution as the ions passed through the heating region and subsequently flowed out along the diverging B field lines. As expected, the heated ions transfer their energy from perpendicular to parallel motion as they move through the region of diverging B field. Both their parallel thermal energy and the parallel drift energy increase at the expense of the perpendicular energy. |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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