Showing papers by "John R. Cary published in 1980"
TL;DR: Cary and Kaufman as mentioned in this paper presented a LiBRary ANL WAVEENERGY DENSITY and WAVE-MOMENTUM Density of EACH SPECIES of a Collisionless PLASMA.
Abstract: LBL-1 0414 C • Preprint published in Physical Review A LiBRARY ANL WAVE-ENERGY DENSITY AND WAVE-MOMENTUM DENSITY OF EACH SPECIES OF A COLLISIONLESS PLASMA John R. Cary and Allan N. Kaufman November 1979 y TWO-WEEK LOAN is a Library Circulating Copy which may be borrowed a personal two weeks. copyft Divisiony Ext 6782. Prepared for the U.S. Department of Energy under Contract W-7405-ENG-48
13 citations
TL;DR: In this article, the theory of the production of plasma by the interaction of a relativistic electron beam with a diatomic gas is presented, which includes atomic species as well as molecular species; this is necessary when nearly fully ionized plasma are produced.
Abstract: The theory of the production of plasma by the interaction of a relativistic electron beam with a diatomic gas is presented. The theory includes atomic species as well as molecular species; this is shown to be necessary when nearly fully ionized plasma are produced. In addition, the theory models magnetic field diffusion by an effective time constant, which allows extensive parameter studies to be performed. The dependence of the production process on the beam intensity and width and the gas pressure is presented. It is shown that the thin beams produced by foil‐less diodes are not capable of ionizing high pressure (≳ 3 Torr) targets.
6 citations
TL;DR: In this paper, the dispersion relation for the free-electron laser was derived in the cold-beam limit and it was found that the forward wave has the largest growth rate, but the backward wave had the greatest spatial amplification rate.
Abstract: The two-dimensional dispersion relation for the free-electron laser is derived in the cold-beam limit. It is found that the forward wave has the largest growth rate, but the backward wave has the greatest spatial amplification rate. For $\frac{{k}_{0}v}{{\ensuremath{\omega}}_{p}}g{\ensuremath{\gamma}}^{\frac{\ensuremath{-}3}{2}}+{\ensuremath{\gamma}}^{\frac{\ensuremath{-}1}{2}}$, the free-electron laser is unstable at all angles with the low-frequency waves being absolutely unstable.
2 citations