Accession Number:

ADA459268

Title:

Hollow Cathode Produced Electron Beams for Plasma Generation: Cathode Operation in Gas Mixtures

Descriptive Note:

Memorandum rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

2006-12-15

Pagination or Media Count:

20.0

Abstract:

Pulsed hollow cathode discharges, used to generate kilovolt electron beams for the production of plasmas, were studied in low pressure 50-70 mTorr backgrounds of argon, oxygen, nitrogen, SF sub 6 and mixtures thereof. Cathode currents were measured as a function of cathode voltage, duty factor, and relative gas concentration. The cathode current was found to have a dependence on all variables, with the greatest impact being operating gas for all voltages and duty factors. The ambient gas is thought to influence the production of secondary electrons at the cathode surface thereby impacting the operation of the hollow cathode discharge and electron beam production.

Subject Categories:

  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE