Wave interference effect on the shape of solar microwave bursts

Scintillation of a radio signal passing through solar corona is considered. The expression describing a time profile of these scintillations on the basis of multibeam propagation of radio waves is derived. It is determined that the time profile of scintillations caused by multibeam propagation may appear as impulses of emission or absorption or may have sawtooth form. The assuming of the specific emission source features is not the only way to explain the shape of impulses, since the effect of multibeam propagation of radio waves through solar corona and interplanetary space yields a simple explanation of the phenomenon discussed.