Accession Number:

ADA636704

Title:

Electron-Beam Transport Studies for Radiographic Applications

Descriptive Note:

Conference paper

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV

Report Date:

2003-06-01

Pagination or Media Count:

5.0

Abstract:

We have measured electron-beam-produced gas ionization in a paraxial-diode gas cell, using three different interferometric arrangements. We have also measured the beam net current at the channel wall. In the range of tens of kAcm2 and 0.3-5 Torr, the electron density is in the 1017 cm-3 range, scaling strongly with beam current density and sub-linearly with pressure. The fractional net current ranges from 20-40. We are developing a rate-equation ionization model whose results are consistent with these measurements.

Subject Categories:

  • Electrical and Electronic Equipment
  • Operations Research
  • Electricity and Magnetism
  • Nuclear Physics and Elementary Particle Physics
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE