Electrical & Computer Engineering, Department of


Date of this Version



Published in Physics Letters A 278:3 (December 25, 2000), pp. 152–158; doi 10.1016/S0375-9601(00)00751-9 Copyright © 2000 Elsevier Science B.V. Used by permission.


We report the results of a study of the electrostatic interaction between negatively charged particles in a plasma. The goal of the study was to investigate the possibility of an attractive interaction which would make possible the formation of “molecules” of particles. For all approximations relating the positive ion density to the local electrostatic potential that we examined, we find that the interaction is repulsive for all particle separations.