The effect of helium flow on the fullerene formation process is studied. It
has been shown that an annular flow of helium directed into the fullerene
formation zone along the discharge axis reduces the content of fullerenes i
n soot. If the velocity of the additional flow of helium pumped through a h
ole in the cathode becomes close to that of the gas-plasma jet, practically
no fullerenes are formed. (C) 2001 MAIK "Nauka/Interperiodica".