FREQUENCY STRUCTURE OF RADIO SCINTILLATIONS FROM THE PULSAR PSR-1508+55

Using the method of predetector dispersion removal, we analyze the rad io pulses recorded fi om the pulsar PSR 1508+55 at 102.5 MHz to determ ine the scattering parameters. The measured decorrelation bandwidth is 87 Hz, and the scintillation time scale is 13 s. The rms scattering a ngle is estimated to be 0''.14. We plot the power-law frequency depend ences of the scintillation time scale and the decorrelation bandwidth by using our data and the results of other authors for this pulsar. Th e exponents in these dependences lie between the values corresponding to the Gaussian and Kolmogorov spectra of nonuniformities.