Accession Number : AD0285289

Title :   ELECTRON-ION RECOMBINATION IN MAGNETOPLASMADYNAMIC POWER GENERATORS

Corporate Author : PARSONS (C A) AND CO LTD NEWCASTLE-ON-TYNE (ENGLAND)

Personal Author(s) : MCNAB,I.R. ; ROBINSON,C.A.

Report Date : SEP 1962

Pagination or Media Count : 1

Abstract : In inert gas-alkali metal vapour magnetoplasmadynamic (MPD) power generators employing an ionisation level above that corresponding to thermal ionisation at the static temperature of the plasma, recombination will be one of the main factors controlling the electrical conductivity of the gas. The present comprehensive review of recombination mechanisms indicates that, for the type of MPD generator mentioned, a three body electron-electron-ion recombination process will be of greatest importance. For the case where the gaseous component of the MPD generator is di- or poly-atomic, an alternative recombination mechanism is postulated (three body electron-atom-ion) and a recombination coefficient derived; values of this coefficient are given as functions of mean electron energy for hydrogen, nitrogen, oxygen and ammonia. (Author)

Descriptors :   *RECOMBINATION REACTIONS, ATOMS, ELECTRONS, GAS IONIZATION, GENERATORS, IONS, MAGNETOHYDRODYNAMICS, PLASMAS(PHYSICS)

Distribution Statement : APPROVED FOR PUBLIC RELEASE