NRL 1989 Beam Propagation Studies in Support of the ATA Multi-Pulse PropagationExperiment

摘要

NRL theoretical and computational studies in support of the ATA Multi-PulsePropagation Experiment (MPPE) are summarized in a series of papers which were presented at the 1989 Annual DARPA/SDIO/Services Charged Particle Beam Review. The six papers presented here were all written prior to the completion of the experiment. The first of these papers presents simulation results which modeled beam stability and channel evolution for an entire five pulse burst. The second paper describes a new air chemistry model used in the SARLAC propagation code and discusses the role of CO2 in speeding channel heating. An overview of NRL studies on beam propagation in reduced-density channels is provided in the next paper. The fourth paper describes hydrodynamic simulations of convective mixing in beam-generated channels using a new flux-corrected transport algorithm developed for NRL's Connection Machine. Keywords: Hose instability; Electron beams; Beam propagation; Charged particle beams; Air chemistry. (js)