W. Gekelman et al., A WHISTLER WAVE INTERACTION WITH A DENSITY STRIATION - A LABORATORY INVESTIGATION OF AN AURORAL PROCESS, IEEE transactions on plasma science, 24(1), 1996, pp. 20-21
In a laboratory experiment, whistler waves are launched toward a field
-aligned density gradient. Characteristic scale length and frequency r
atios were carefully scaled to reproduce situations found in the auror
al ionosphere. The experiment clearly shows the direct conversion of w
histler waves to largely electrostatic lower hybrid waves.