Ion oscillations in a cold positive-ion electron-beam thermal electron plasma

Plasmas with negative ions-probe measurements and charge equilibrium

“…For example, a sudden change in the sheath criterion and the hysteresis of the plasma-sheath boundary with the variation of the negative ion density is an interesting problem to be examined experimentally (Ingram and Braithwaite 1988). Another problem involves the scaling units, both in length and time (Emeleus 1986). Furthermore, when the ion temperature is low, there is a possibility of a quantum plasma if the number of charged particles in a Debye sphere becomes less than unity.…”

“…Furthermore, when the ion temperature is low, there is a possibility of a quantum plasma if the number of charged particles in a Debye sphere becomes less than unity. Recently, plasmas with charged dust have been considered (Emeleus andBreslin 1983, Goertz 1989). A plasma with charged dust of both signs will have interesting applications.…”

“…This corresponds to an effective increase of T, with a beam (Emeleus 1971(Emeleus , 1975. For the two-Maxwellian case with S = 100, f increases from 0.497 to 0.82 and from 0.497 to 0.98 for Th/T, = 5 and 10, respectively when A 3 nh/ne is varied from 0 to 0.5.…”

The negative end of cold cathode glow discharges

“…The electron Debye lengths, even on the axis, and the related thickness of the ion sheaths on the wall, increased until they became comparable with R . About where this occurred and the discharge had acquired some sub-normal characteristics (Emeleus and Reynolds 1968) the head of the PC formed through a complicated pattern of space-charges. The throttling of the discharge, which has also been noticed by J G A Holscher (private communication) was a prelude to t The first paper also includes an analysis for mixed linear and quadratic volume loss terms.…”