Accession Number : ADA086493


Title :   Collective Ion Acceleration and Electron Beam Propagation in Dielectric Guides.


Descriptive Note : Annual rept. 1 Feb 79-31 Jan 80,


Corporate Author : SPIRE CORP BEDFORD MA


Personal Author(s) : Halverson,Ward ; Greenwald,Anton C


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA086493


Report Date : 01 Apr 1980


Pagination or Media Count : 41


Abstract : Measurements of front velocity and transported electron beam current are reported for several configurations of dielectric guide. It appears that the ions which determine the speed of beam-front propagation come only from a short section of dielectric near the inlet of the guide. They are accelerated in the potential well of the virtual cathode formed when the space-charge-limited electron beam is injected. Plasma formed by electron bombardment of the downstream guide walls apparently does not influence the beam-front speed, although it is important in determining the efficiency of current transport. Measurements of collective ion acceleration have been deferred until the second year of the program. (Author)


Descriptors :   *DIELECTRIC WAVEGUIDES , *ION ACCELERATORS , *ELECTRON ACCELERATORS , PROPAGATION , SPECIFICATIONS , ION BEAMS , PULSE GENERATORS , TRANSPORT PROPERTIES , ELECTRON BEAMS , WAVEFRONTS


Subject Categories : Electricity and Magnetism
      Particle Accelerators


Distribution Statement : APPROVED FOR PUBLIC RELEASE