Interplanetary Scintillation in Jovian Decametric Radiation

Spaced-receiver observations over four oppositions establish the origin of the 1-sec component of time structure in Jupiter's decametric emission as diffraction by inhomogeneities in the solar wind moving radially outward from the Sun. Arguments from simple diffraction theory suggest inhomogeneity correlation scale sixes ranging from a few hundred to a few thousand kilometers and set an upper limit on the intrinsic angular size of Jupiter's decametric source at about S".