This paper presents a preliminary analysis of the turbulence spectrum of the solar wind in the near-Sun region R < 50 R _ { \odot } , obtained from interplanetary scintillation measurements with the Ooty Radio Telescope at 327 MHz .
The results clearly show that the scintillation is dominated by density irregularities of size about 100 - 500 km .
The scintillation at the small-scale side of the spectrum , although significantly less in magnitude , has a flatter spectrum than the larger-scale dominant part .
Furthermore , the spectral power contained in the flatter portion rapidly increases closer to the Sun .
These results on the turbulence spectrum for R < 50 R _ { \odot } quantify the evidence for radial evolution of the small-scale fluctuations ( \leq 50 km ) generated by Alfvén waves .