CORRELATION PARAMETERS OF SOLAR-WIND SUPE RSONIC-FLOW FORMATION PROCESS

Formation process of the solar-wind supersonic flow is studied. We use data obtained in 1983 - 1992 in radio astronomy experiments on the ci rcumsolar plasma probing. We found correlations between the plasma flo w parameters with the corresponding consecutive stages of plasma flow acceleration (subsonic region, transition region with mixed flow, and supersonic-flow region). It is established that the transition-region extension, its distance from the Sun, and the supersonic-flow terminal velocity at large distances are to a significant extent predetermined by the state of the plasma at the initial stage of acceleration in th e subsonic region.