PROCESSES IN GAS AND PLASMAS WITH NEGATIV E-IONS

The phenomena induced by the negative ion processes in the weakly ioni zed gas and plasmas are reviewed. The electron attachment and detachme nt processes are briefly described. A particular attention is given to the special features of the charged particle transport in the electro negative gases: electron attachment cooling, absolute negative conduct ivity of plasmas, the unstable negative ion effect on the electron tra nsport, forming of regions of the steep plasma density variation. The induced by negative ions new modes of waves and instabilities in plasm as are studied. The suggestions about using the negative ion processes in ecology and environmental science are discussed.