Accession Number:

ADA639199

Title:

Electrostatic Acceleration of Microprojectiles to Ultrahypervelocities

Descriptive Note:

Corporate Author:

R AND D ASSOCIATES ALEXANDRIA VA WASHINGTON RESEARCH LAB

Personal Author(s):

Report Date:

1989-06-01

Pagination or Media Count:

5.0

Abstract:

A broad survey of potential techniques has led to a consistent system design for electrostatic acceleration of microprojectiles to ultrahypervelocity 100 kms . The microprojectile itself is a microndiameter carbon fiber, a few hundred microns long, charged to levels of several coulombskg by application of fields at the fiber surface of 10expn 9 Vm. Dielectric encapsulation of electrodes in a multiplate accelerator structure allows the use of accelerating fields in excess of 10expn 8 Vm, with comparable fields for focusing and guiding the projectile. A reflex transmission line arrangement has been devised that permits the longitudinal accelerating field to follow the projectile motion with minimal switch action and a non-reversing electric field vector. Neutralization of the projectile charge is accomplished by thermionically-emitted electrons without disturbing the integrity of the projectile or its motion. Results of the design study, scaling of design constraints and prospects for practical accomplishment will be discussed.

Subject Categories:

  • Electricity and Magnetism
  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE