  We present the occultation observation of compact radio source B0019-000
through the plasma tail of comet Schwassmann-Wachmann 3-B. The observation was
made with the Ooty Radio Telescope at 326.5 MHz on 2006 May 26, when the plasma
tail of the comet was in front of this source. The scintillation was found to
be increased significantly for the target source compared to that of a control
source. The intensity fluctuation power spectra show both steepening at high
spatial scales and excess power at low spatial scales. This observation can be
attributed to the turbulence in the comet plasma tail. A two-regime plasma
turbulence can explain the time-evolution of the power spectrum during the
occultation observation.
