NANOSECOND-PULSE BREAKDOWN STUDY AT MICROWAVE FREQUENCIE

Abstract

Microwave breakdown of gases was studied under shortpulse conditions. An experimental technique was developed for generating and measuring high-power 10 nanosecond pulses at X-band frequencies. Breakdown times were in the range of 2 to 10 nanoseconds and values of E/p extended to 10,000 volts/cm-torr. Normalized breakdown curves for air, nitrogen, helium, Freon 12, SF sub 6, Freon C318 and Freon 114 were obtained and compared to theoretical estimates. The agreement was good. Comparison of these results with published breakdown data obtained with nanosecond video pulses enabled values of electron collision frequency to be calculated for air, helium and nitrogen at large values of E/p. For electron attaching gases it was found that some mechanism provided initial ionization and also effected the breakdown threshold.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1964
Accession Number
AD0603818

Entities

People

  • C. Buntschuh
  • M. Gilden

Organizations

  • M/A-COM Technology Solutions

Tags

DTIC Thesaurus Topics

  • Agreements
  • Collisions
  • Electrons
  • Frequency
  • Frequency Bands
  • Ionization
  • Microwaves
  • Nanosecond Time
  • Nitrogen
  • Radio Frequency
  • X Band

Fields of Study

  • Physics

Readers

  • Organic Chemistry
  • Pulsed Power and Plasma Physics.
  • Regression Analysis.

Technology Areas

  • Microelectronics