Effect of disconnection on diffusion decay of electronegative low-pressure plasma

It is shown, that two main scenarios of the pulse plasma diffusion decay of the low-pressure electronegative gases in the presence of disconnection may be selected. By weak disconnection at first there takes place sharp decrease in the electrons concentration and the ion-ion plasma is formed. The concentration of all the plasma charged components at this stage are reduced by the uniform exponential law with the characteristic disconnection time. In the case of string disconnection there exists another mode of decay with transition at the second stage to the normal (without negative ions) plasma. Such paradoxical events as the electrons concentration growth in time, the potential near-the-wall jump and significant increase in the electrons diffusion cooling are possible thereby