Accession Number : AD0474324

Title :   LOW-VOLTAGE ARC STUDIES.

Descriptive Note : Quarterly progress rept. no. 9, 1 Jun-1 Sep 65,

Corporate Author : MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB

Personal Author(s) : Lomax, R. J. ; Martin, R. J. ; Rowe, J. E. ; Salinger, S. N.

Report Date : SEP 1965

Pagination or Media Count : 66

Abstract : The evacuated emitter isolating the cathode heater from the discharge was installed. Comparison of volt-ampere discharge characteristics of hot-cathode discharges in Ne and H2 revealed that the low-voltage arc in H2 has a flat disc shaped luminous region rather than a ball-of-fire. The discharge potential is of the order of the ionization potential H2. Probe measurements revealed a plasma potential of H2. Probe measurements revealed a plasma potential maximum greater than the ionization potential of the H2 gas. The Ne volt-ampere characteristic of the hot-cathode discharge revealed that the low-voltage arc can exist in two modes. Several new techniques were developed to facilitate the application of Monte Carlo methods to realistic plasma problems. These techniques were applied to the development of a computer program for the Monte Carlo simulation of a plasma diode operating in the low-voltage arc mode. A correlation is presented of the best existing data on the elastic collision probabilities of electrons in the energy range from 0 to 100 ev with Ne. (Author)

Descriptors :   *ELECTRIC ARCS), (*THERMIONIC CONVERTERS, (*GAS DISCHARGES, ELECTRIC ARCS), HYDROGEN, NEON, PLASMA SHEATHS, ELECTRIC DISCHARGES, VOLTAGE, GAS IONIZATION, THERMIONIC EMISSION, MONTE CARLO METHOD, COMPUTER PROGRAMMING, MATHEMATICAL ANALYSIS, IONIZATION POTENTIALS, CATHODES, SCATTERING, ELECTRONS, PLASMAS(PHYSICS).

Subject Categories : Electric Power Production and Distribution
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE